Natsiatum herpeticum

Natsiatum herpeticum Buch.-Ham. ex Arn., Edinburgh New Philos. J. 16: 314 314 1834. (Syn: Natsiatum tonkinense Gagnep.; Sicyos pentandrus Wall. [Invalid]);
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Nepal to China (W. Yunnan) and Indo-China: Assam, Bangladesh, China South-Central, East Himalaya, India, Laos, Myanmar, Nepal, Thailand, Vietnam as per POWO;

Dioecious climbing shrubs; roots tuberous; young branches yellow-brown strigose; old branches conspicuously lenticellate. Leaves simple, alternate, spiral; petioles ca. 3.5-7.5 cm, slender, yellow- brown crispate pubescent; lamina ca. 8-15 × 5-10 cm, broadly ovate, cordate to truncate or abruptly cuneate at base, acute or acuminate at apex, dentate, chartaceous, rough due to stiff, white hairs; secondary nerves 3-5 pairs, midrib prominent abaxially, concave adaxially, tertiary veins subparallel, reticulate veins conspicuous. Inflorescences in supra-axillary hirsute spike-like racemes, ca. 10-12 cm long, slender, pendulous; Flowers unisexual; bracts linear; pedicels ca. 2-3 mm long; calyx lobes valvate, linear-lanceolate, outer surface densely covered with coarse hairs; petals 5, ca. 2.5 mm long, lanceolate, hairy inside; Male flowers: filaments short; anthers sagittate; Female flowers: staminodes subulate; ovary hairy; style 2-3-lobed, laterally compressed, ovate, rugose. Drupe ca. 1.5 × 1 cm, yellow-green, becoming black with age.
Evergreen broad-leaved forests on limestone mountains; ca. 2400 m.
(Attributions- Ayyappan. N & V. Kokilavani, French Institute of Pondicherry, Compiled from various sources listed in the reference as per India Biodiversity Portal)
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[EfloraIndia_101213PD01_ Flora of Odisha for ID] :  Attachments (2). 5 posts by 4 authors.
i have recently collected this liana from gajapati district, south Odisha growing in under the canopy of evergreen trees near stream (900 m above msl). Please help me in ID.
Flowers very small (5 mm in diameter), leaves large, 10 to 14 cm long and 5 to 7 cm broad, petiole 5 cm.

Triclisia macrophylla

Many many thanks … for the identification. I was thinking of menespermaceae, but not sure. Yes the sepals and petals are green.

It is shown as critically endangered as per IUCNRed List (CR) with range in Cameroon; Equatorial Guinea (Bioko); Sierra Leone.
Being so, it may not occur in India in wild.

It is male climber of Tinospora cordifolia

It is not Tinospora cordifolia, the male flower is quite different

Natsiatum herpeticum, Icacinaceae,

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Natsiatum herpeticum_RKC01_20032012: Images not visible now.

Natsiatum herpeticum Buch.-Ham. ex Arn. (Family: Icacinaceae)
Loc.: Guwahati, Assam, Date: September, 2009

I’ve seen this plant at some places in Arunachal and Assam. The leaves and stems are a little scabrid in texture and hence can be easily recognized.

 

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