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Myanmar

Flowers of the Myanmar Himalaya — 604 species recorded from northern Myanmar (Burma) and the eastern Himalayan borderlands, a biodiversity hotspot linking the Himalaya to the mountains of Yunnan and Southeast Asia. The region’s forests and alpine slopes hold a rich flora of rhododendrons, orchids, balsams and gentians. Every page gives a botanical description, distribution, habitat and flowering time with the original photograph.

Betulaceae

Alnus nepalensis

by GP Jürgens

D.Don

Bhutan2012 1150
Bhutan Tashiyangtse 1750m, October
Nepal 1994 159 ergebnis
Ost-Nepal Mewa-Khola
1800m, April

Description

Alnus nepalensis D.Don, the Nepalese alder, is a deciduous tree of the Betulaceae distributed throughout the Himalaya and adjacent ranges, from Nepal and India through Bhutan to southwestern China, Myanmar and Vietnam (GBIF: c. 1,931 occurrences). It is a fast-growing pioneer of moist temperate and subtropical zones, colonising landslides, river terraces, abandoned fields and forest gaps, typically between about 900 and 2,700 m. The photographed trees from Tashiyangtse in eastern Bhutan (c. 1,750 m) and the Mewa-Khola in eastern Nepal (c. 1,800 m) exemplify its dominance on moist, disturbed mid-montane slopes.

The tree reaches 10–25 m, with smooth grey bark becoming fissured with age. The leaves are alternate, broadly elliptic to ovate, acuminate, with finely serrate to nearly entire margins and prominent pinnate venation. Unusually for the genus, A. nepalensis flowers in autumn: the slender pendulous male catkins and short erect female inflorescences appear together, and the female structures mature into small, woody, cone-like infructescences (strobiles) that persist on the tree and release tiny winged nutlets (samaras) for wind dispersal.

Alnus nepalensis is ecologically and economically significant as a nitrogen-fixing species, harbouring symbiotic actinomycetes of the genus Frankia in root nodules; this enables it to enrich degraded soils, making it valuable in agroforestry, soil reclamation, watershed restoration and as a shade tree in cardamom cultivation. The wood is used for timber, fuel and matchwood. The species is abundant and of least conservation concern.

Author: D.Don · Sources: POWO (Kew), Flora of China Vol. 4, Flora of Bhutan Vol. 1, Flora of Nepal, GBIF, Chen & Li: Betulaceae of China

Apocynaceae

Alstonia sebusi

by GP Jürgens

(Van Heurck & Müll.Arg.) Monach.

Bh2008 497 P766
Bhutan Samtengang, 2200m April

Description

Alstonia sebusi (the accepted spelling being Alstonia sebusii) is a tree of montane forests in the eastern Himalaya and adjacent Southeast Asia, recorded from Bhutan, India, China (Yunnan), Myanmar and Japan, with about 50 georeferenced occurrences in GBIF. It occurs in broadleaved evergreen and mixed montane forest, typically on slopes within the warm- to cool-temperate belt. The specimen illustrated was photographed at Samtengang in Bhutan at about 2200 m in April; across its range it generally favours humid, well-drained forest soils where it grows as a canopy or sub-canopy tree.

The species is a small to medium-sized evergreen tree exuding milky latex when cut, as is characteristic of the genus. The leaves are arranged in whorls of three to several at the nodes, simple, entire, leathery and elliptic to oblong, with numerous closely parallel lateral veins. The flowers are small, white to cream, borne in terminal cymose clusters, with a salverform corolla whose tube bears overlapping lobes; the gynoecium consists of two carpels. The fruit comprises a pair of slender, pendulous follicles that split to release numerous flattened seeds bearing tufts of hair at each end, adapted for wind dispersal.

Alstonia (Apocynaceae, subfamily Rauvolfioideae) is a pantropical genus of latex-bearing trees rich in indole alkaloids, several of which have medicinal and pharmacological interest. The whorled leaves and paired follicles with comose seeds are diagnostic. Like other Alstonia species it provides soft, light timber locally used for carving and utility purposes. No major conservation threat is documented, though the species is dependent on the continued integrity of mid-elevation montane forest, which faces pressure from logging and land conversion in parts of its range.

Author: (Van Heurck & Müll.Arg.) Monach. · Sources: POWO (Kew), GBIF, Flora of China, Flora of Bhutan, Flora of Bhutan and Sikkim, Sidiyasa Revision of the Genus Alstonia

Araceae

Amorphophallus napalensis

by GP Jürgens

(Wall.) Bogner & Mayo

Bh2008 63 P103
Bhutan Punaka-Chu, 1500m April

Description

Amorphophallus napalensis is a tuberous aroid of the subtropical Himalaya and adjacent Southeast Asia, recorded from India, Nepal, Thailand, Bhutan, Myanmar and Bangladesh across some 80 GBIF occurrences. The photographed plant was found along the Punaka-Chu in Bhutan at about 1500 m in April. It grows in moist broad-leaved forest, on shaded slopes, ravines and forest floors, typically between roughly 500 and 1800 m, emerging with the pre-monsoon and monsoon rains from a dormant underground tuber.

The plant arises from a depressed-globose subterranean tuber and produces, in season, a single large solitary leaf with a long mottled petiole and a blade divided into numerous segments giving an umbrella-like, much-dissected appearance. The inflorescence, typical of the genus, is a spadix subtended by a spathe; the spadix bears a basal zone of female flowers below a zone of male flowers, topped by a sterile appendix. At anthesis the inflorescence emits a fetid odour and may generate heat (thermogenesis) to attract carrion-feeding flies and beetles, which effect pollination. The infructescence ripens into a cluster of fleshy berries.

Amorphophallus is a large palaeotropical genus notable for these protogynous, often malodorous inflorescences and their fly-and-beetle (sapromyophilous) pollination, with the berries subsequently dispersed by birds. The seasonal solitary leaf and dormant tuber adapt the species to the marked wet-dry rhythm of the monsoon forest. A. napalensis is widespread and not regarded as threatened, though, like many forest aroids, it depends on the maintenance of shaded, humid woodland habitat.

Author: (Wall.) Bogner & Mayo · Sources: POWO (Kew), GBIF, Flora of China, Flora of Bhutan, Flora of Nepal, Hetterscheid & Ittenbach – Revision of the Genus Amorphophallus

Vitaceae

Ampelocissus rugosa 

by G & P Jürgens

Planch.

Garw 2005 268 ergebnis
India Garhwal Kunol 2400m, September

Description

Ampelocissus rugosa is a tendril-climbing vine of the Himalaya and adjacent south-east Asia, recorded from Nepal, India, Bangladesh, Bhutan, China, Myanmar and Vietnam. Its roughly 95 georeferenced collections, the fewest in this group, indicate a relatively restricted and under-collected distribution along the subtropical-to-warm-temperate forest belt of the Himalayan foothills. It grows in forest margins, thickets, ravines and along streams, scrambling over shrubs and trees. The photographed plant from Garhwal at Kunol at 2400 m in September represents the upper part of its altitudinal range and its late-monsoon fruiting period, when the vine bears its grape-like infructescences.

It is a robust herbaceous to woody climber with leaf-opposed tendrils characteristic of the grape family. The simple leaves are broadly ovate to cordate in outline, sometimes shallowly lobed, with a toothed margin and a rugose (wrinkled) upper surface that gives the species its epithet; the lower surface is often tomentose. The inflorescence is a leaf-opposed, compound cyme or panicle, typically with a basal tendril, bearing many small, greenish flowers with a four- to five-merous calyx and corolla and a fleshy disc around the ovary. The fruit is a small, globose, fleshy berry, ripening dark purple to black and containing one or few hard seeds, the cluster superficially resembling a wild grape.

Ampelocissus is a pantropical genus of the Vitaceae closely allied to Vitis, distinguished by its tendril-bearing inflorescences and frequently tuberous rootstock. Several Asian species are gathered locally for their edible, acidic fruits and have potential as wild relatives of the cultivated grape. A. rugosa is a sparsely documented Himalayan vine; while not formally assessed, its limited collection record warrants attention to forest-margin habitats under pressure from clearance.

Author: Planch. · Sources: POWO (Kew), GBIF, Flora of China Vol. 12, Flora of Bhutan Vol. 2, Flora of Nepal, Latiff's Revision of Asian Ampelocissus

Asteraceae

Anaphalis busua

by GP Jürgens

DC.

Bhutan2012 160
Bhutan Haar-Valley, 3200m September
Bhutan2012 160
Bhutan Haar-Valley, 3200m September
BhutanPG2011 833 01 01 1
Bhutan Chele-La, 3400m July

Description

Anaphalis busua is a Himalayan everlasting widespread from Pakistan and India through Nepal, Bhutan and Myanmar into south-western China, with additional records from Sri Lanka; the 619 occurrences confirm a broad montane range, while points labelled Belgium represent cultivated or erroneous data. It occupies open grassy slopes, forest clearings, banks and disturbed ground from roughly 1500 to 3600 m. The documented Bhutanese material from the Haa Valley at about 3200 m in September and from the Chele-La at 3400 m in July illustrates its long flowering season across the temperate and lower subalpine zones of the eastern Himalaya.

The species is a perennial herb with a woody rootstock producing erect, white-woolly stems. The leaves are sessile, linear to oblong-lanceolate, somewhat decurrent, green and thinly arachnoid above and densely white-tomentose beneath, with revolute margins. The capitula are small and numerous, aggregated into dense terminal corymbs; each head is heterogamous and functionally dioecious, with the involucre of papery, pearly-white, radiating phyllaries that give the genus its everlasting quality. The florets are tubular and whitish, the outer female and filiform, the inner mostly functionally male. The cypselae are minute and oblong, crowned by a pappus of slender, barbellate, basally free bristles.

Anaphalis is a large genus of the Gnaphalieae especially diverse in the Sino-Himalayan region, distinguished from Helichrysum and Gnaphalium by its scarious involucres and predominantly dioecious heads. A. busua belongs to the broad-leaved Himalayan group and is taxonomically variable, with several related forms intergrading. The dry chaffy phyllaries persist long after flowering, favouring wind dispersal of the small achenes. The species is common and weedy in disturbed montane habitats and is of no conservation concern.

Author: DC. · Sources: POWO (Kew), GBIF, Flora of China Vol. 20-21, Flora of Bhutan, Flora of Nepal, Hilliard & Burtt Gnaphalieae studies

Asteraceae

Anaphalis nepalensis

by GP Jürgens

(Spreng.) Hand.-Mazz.

Garh 07 207 ergebnis
India Garhwal Panwali 3300m, June

Description

Anaphalis nepalensis is a widespread Sino-Himalayan everlasting distributed across China, Taiwan, Nepal, India, Pakistan, Bhutan, Afghanistan and Myanmar, with over 3600 georeferenced records making it one of the better-documented Himalayan composites. It occupies open alpine and subalpine meadows, grassy slopes, rocky pastures and forest clearings, generally between about 3000 and 4500 m. The photographed plant from Panwali in the Garhwal Himalaya at 3300 m, flowering in June, typifies its grassy mid-alpine habitat where it forms low cushions or spreading patches in short turf.

It is a perennial, white-woolly herb arising from a creeping rhizome, with prostrate to ascending stems clothed in dense grey-white tomentum. The leaves are oblanceolate to spathulate, often crowded in a basal rosette and reducing upward, cottony on both surfaces. The capitula are arranged singly or in small terminal clusters and are dioecious or subdioecious; the conspicuous part is the spreading ring of dry, papery, pearly-white involucral bracts surrounding the small yellowish disc florets, an arrangement that gives the genus its "pearly everlasting" character. The achenes bear a pappus of fine barbellate bristles.

The persistent, scarious bracts retain their form long after flowering, an adaptation suiting the plant to harsh, exposed alpine conditions and aiding identification. Anaphalis nepalensis is a variable species with several recognised varieties differing in stature and leaf form, and it is sometimes confused with related Himalayan congeners. Common and ecologically adaptable, it is not of conservation concern and is occasionally grown as a rock-garden ornamental.

Author: (Spreng.) Hand.-Mazz. · Sources: POWO (Kew), GBIF, Flora of China, Annotated Checklist of the Flowering Plants of Nepal, Compositae monographs (Handel-Mazzetti)

Asteraceae

Anaphalis royleana

by G & P Jürgens

DC.

Garw 2005 297 ergebnis
India Garhwal Patanathi 3750m, October
Garw 2005 50 ergebnis

Description

Anaphalis royleana is a high-montane to subalpine perennial widely distributed across the Sino-Himalayan region, recorded from India, Nepal, Pakistan, Bhutan, Bangladesh, Myanmar, China and Taiwan. With 482 georeferenced occurrences, it is one of the more frequently collected members of the genus, occupying open stony slopes, alpine meadows, grazed pastures and the margins of rhododendron and birch scrub. The species typically ranges between roughly 3000 and 4500 m; the plant photographed at Patanathi in Garhwal, India, at 3750 m in October exemplifies its preference for well-drained, sunny situations where it flowers and fruits late into the season.

The plant forms tufted clumps from a woody rootstock, with erect, simple, white-woolly (lanate) stems. The leaves are alternate, sessile and frequently decurrent, linear to oblong-lanceolate, entire-margined, and densely grey- to white-tomentose, the lower surface usually more persistently floccose than the upper. The capitula are small, numerous, and aggregated into dense terminal corymbs. Each head is subtended by several rows of dry, papery (scarious), pearly-white involucral bracts that give the genus its garden name; the florets are functionally unisexual, the central disc florets staminate and the marginal florets pistillate. The fruit is a small cylindrical cypsela crowned by a pappus of slender, barbellate bristles facilitating wind dispersal.

Anaphalis is a large Old World genus closely allied to Helichrysum and Gnaphalium within the tribe Gnaphalieae, characterised by its dioecious or subdioecious capitula. A. royleana belongs to a taxonomically intricate complex of Himalayan everlastings in which leaf indumentum and bract form provide the principal diagnostic characters. Its broad elevational and geographic amplitude, tolerance of grazing, and effective anemochory render it secure, and it is not considered threatened.

Author: DC. · Sources: POWO (Kew), GBIF, Flora of China, Flora of Bhutan, Flowers of the Himalaya (Polunin & Stainton), Anaphalis revisionary studies in Gnaphalieae

Asteraceae

Anaphalis triplinervis 

by GP Jürgens

Sims ex C.B.Clarke

Bhutan2015 408
Bhutan Tumching-La 4000m, October
Garw 2005 296 ergebnis
India Garhwal Kunol 2900m, September

Description

Anaphalis triplinervis is a widespread Himalayan everlasting recorded natively from Nepal, India, China, Pakistan, Bhutan, Myanmar and Afghanistan, and widely grown in gardens (hence European and North American records); GBIF holds over 900 occurrences. It is a plant of open subalpine and alpine slopes, grassy meadows, forest clearings and stony banks, ranging from about 2000 to over 4000 m. The photographed material is from Tumching-La in Bhutan at 4000 m in October and from Kunol in Garhwal, India, at 2900 m in September, spanning the autumn flowering across the central and eastern Himalaya.

The species is a tufted perennial herb with creeping rhizomes and erect, white-woolly stems. The leaves are alternate, oblong to obovate-lanceolate, sessile and often somewhat decurrent, with the three prominent longitudinal nerves that give the epithet "triplinervis"; they are green and thinly cobwebby above and densely white-tomentose beneath. The capitula are small and crowded in dense terminal corymbs, each surrounded by spreading, papery, pearly-white involucral bracts that form the showy "flower"; the true florets are small and yellowish, the plants typically dioecious or functionally so. The fruit is a tiny cypsela with a pappus of barbellate bristles.

Anaphalis belongs to the tribe Gnaphalieae, the cudweeds, and A. triplinervis is among the most familiar Himalayan species, its persistent papery bracts making it a popular everlasting for drying. Abundant and ecologically tolerant of grazed and disturbed slopes, it is of no conservation concern.

Author: Sims ex C.B.Clarke · Sources: POWO (Kew), GBIF, Flora of Bhutan, Flora of China, Annotated Checklist of the Flowering Plants of Nepal, Revision of Asiatic Anaphalis (Gnaphalieae)

Ranunculaceae

Anemonastrum demissum

by GP Jürgens

(Hook.f. & Thomson) Holub

Bh09 114 G203
Bhutan Chele-La, 3500m June
Bh09 159 G282
Bhutan Chele-La, 4000m June
Nepal 95 173 P282 ergebnis
Nepal Rupien La 3850m October
Bhutan2012 273
Bhutan Dochu-La 3500m, September

Description

An alpine anemone of the Himalaya and the Tibetan Plateau, recorded from China, Myanmar, Nepal, Bhutan, India and Pakistan, with around 1600 GBIF occurrences. It is a plant of open alpine meadows, grassy slopes, rocky pastures and scrub margins, generally between about 3000 and 4500 m. The featured collections come from several high passes, including Bhutan's Chele-La at 3500 to 4000 m in June, the Dochu-La at 3500 m in September, and Nepal's Rupien La at 3850 m in October, illustrating a long flowering and fruiting season across windswept high-elevation habitats.

The species is a tufted perennial arising from a stout, often woody rootstock crowned with fibrous leaf remnants. The basal leaves are long-petiolate and palmately three- to five-divided, the segments further lobed and toothed and clothed, like the petioles, in spreading hairs. The scape bears a whorl of stalked, leaf-like involucral bracts beneath the inflorescence, which carries one to several flowers. Each flower lacks true petals; the showy perianth consists of five or more white, sometimes bluish- or pinkish-tinged tepals surrounding numerous stamens and a head of many free, hairy carpels. The fruit is an aggregate of compressed, beaked achenes adapted to wind and animal dispersal.

Formerly placed in Anemone, the species is now referred to the segregate genus Anemonastrum, accepted by POWO and GBIF, reflecting molecular and morphological re-circumscription of the windflowers; the basionym honours Hooker and Thomson. Ecologically it is a conspicuous element of summer-flowering alpine turf, offering pollen and nectar to high-altitude insects. Widespread and often locally abundant throughout the Himalaya, it is not of conservation concern, though its grassland habitats are subject to grazing and climatic shifts.

Author: (Hook.f. & Thomson) Holub · Sources: POWO (Kew), GBIF, Flora of Bhutan, Flora of China, Ziman et al. revision of Anemonastrum

Ranunculaceae

Anemonastrum elongatum 

by GP Jürgens

(D.Don) Holub

Nepal 2001 432 ergebnis ergebnis
Nepal (Gorkha) Laprak 1900m, May
Nepal 2001 433 ergebnis
Nepal (Gorkha) Laprak 1900m, May
Nepal Helambu Nasem Pati 3550, May

Description

Anemonastrum elongatum is a perennial herb of the temperate and subalpine Himalaya and adjacent Sino-Himalayan ranges, distributed from Nepal and India eastward through China and southward to Myanmar, with peripheral records in Sri Lanka and beyond (gbif_countries: NP, IN, CN, CA, LK, MM, ZZ); GBIF documents some 113 occurrences. It favours moist forest margins, shaded banks, grassy slopes and streamsides, ranging from warm-temperate woodland into the lower subalpine zone. The illustrated collections span a broad elevational gradient, from Laprak in Gorkha at about 1900 m to Nasem Pati in Helambu near 3550 m, both flowering in May at the onset of the monsoon.

The plant arises from a stout, ascending rhizome and produces erect, hairy stems bearing long-petiolate basal leaves that are palmately three- to five-lobed, the lobes coarsely toothed and clothed in appressed hairs. An involucre of similar but shorter-stalked leaves subtends the inflorescence, which is an elongate, few- to several-flowered cyme borne on slender, villous peduncles. The flowers lack true petals; the showy perianth consists of white to faintly tinged sepals surrounding numerous yellow stamens and a central cluster of carpels. The fruit is an aggregate of compressed, laterally winged achenes tipped with a short persistent style.

Long placed in a broadly circumscribed Anemone, the species is now referred to the segregate genus Anemonastrum, reflecting molecular and morphological recognition of natural lineages within tribe Anemoneae. Its elongating fruiting axis, evoked by the epithet, distinguishes it from allied taxa. Widespread and locally common, it is of no conservation concern, and its broad ecological amplitude makes it a characteristic component of Himalayan herb communities.

Author: (D.Don) Holub · Sources: POWO (Kew), GBIF, Flora of Nepal, Flora of China, Annotated Checklist of the Flowering Plants of Nepal, Tamura's monograph of Ranunculaceae