Following is the key from Flora of Maharashtra.
RIVEA Choisy
1. Woody climbers; peduncles usually 1.flowered; corolla glabrous outside……………. .R. hypocrateriformis
1. Erect undershrubs or shrubs; peduncles usually 2.7.flowered; corolla appressedly hairy only along mid.petaline bands ………….. R. laotica (syn. of Rivea ornata (Roxb.) Choisy in Hook. f.)
Indian species of Ipomoea : 9 posts by 7 authors.
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Recent taxonomy of Convolvulaceae largely revolves around pollen grains and dehiscence if fruits, in addition to usual features of corolla shape, styles and stigma. This is how the closely related genera once placed under Ipomoea are segregated:
Merremia: Pollen smooth, porate; capsule opening irregularly or by 4-valves. Operculina: Pollen smooth, porate; capsule circumscissile.
Ipomoea: Pollen spinose, colpate; fruit dry capsule usually opening by 4 valves; corolla usually glabrous outside; calyx slightly enlarged in fruit.
Stictocardia: Pollen spinose, colpate; fruit dry capsule splitting irregularly; calyx greatly enlarged enclosing the fruit.
Rivea: Pollen spinose, colpate; fruit indehiscent; corolla pubescent outside; corolla salverform; stamens attached near middle of the tube; fruits dry.
Argyreia: Pollen spinose, colpate; fruit indehiscent; corolla pubescent outside; corolla funnel-shaped; stamens attached below middle of the tube; fruits usually fleshy or leathery.
Perhaps more as we finalize our list.
Species with description &
Rivea laotica Ooststroom in Blumea 8: 525. f. 1. 1957; Babu, Herb. Fl. D.Dun 328. 1977. R. ornata (Roxb.) Choisy in Mem. Soc. Phys. Hist. Nat. Geneve 6: 409. 1834; Naithani, Fl. Chamoli 2: 448. 1985. Lettsomia ornata Roxb., Fl. India 2: 86.
Advances in Forestry Research in India, Volume 15 by Ram Parkash, Sharad Singh Negi, M. P. Shiva (1996)
Rivea laotica Oeststr. closely allied to R. ornata (Roxb.) … calyx-segments and characterised by its erect herbaceous habit among other species of large woody climbers in case of all other members of genus Rivea Choisy. … Indo-China, India.
Journal of the Bombay Natural History Society, Volume 101 by Bombay Natural History Society., 2004 (Almeida & Almeida. The identity can be confirmed only from the leaf. 4. Rivea laotica (p. 59, no. 4 12) is Rivea ornata (Roxb.) Choisy. A species from Laos, which is confused with R. ornata and has been renamed as R. laotica by Ooststroom (1 …)
Indian Journal of Forestry, Volumes 1-3 (1978):
Dehra Dun Abstract The correct ident’ty of plant found in Dehra Dun is Rivea ornata (Roxb.) Choisy var. griffithii … Babu (I960 & 1977) fixed its identity as Rivea laotica Ooststr. a p’ant that was described from Indo-China. A critical study of the …….
Traditional Medicines for Modern Times: Antidiabetic Plants edited by Amala Soumyanath (2005)
Rivea ornata Choisy
Gardening in India By George Marshall Woodrow, G Marshall (1999)-
Rivea ornata
Medicinal Plants in Andhra Pradesh, India By T. Pullaiah (2002- Details-
Rivea ornata Choisy
Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993-
Rivea ornata Choisy
Rivea : 1 post by 1 author.
I have updated efi page on Rivea Attempts have been made to incorporate most of the species available in India & nearby areas with details & keys directly or through links. Efloraofindia species’ page links are at the bottom of the page. Any comments are welcome.
Re: completed insertion of images of species of Rivea : 1 post by 1 author.
Rivea page (Convolvulaceae) with images of species in efloraofindia : 1 post by 1 author.
Pl. go through Rivea page (Convolvulaceae) with images of species in efloraofindia (done by …). If you find any mis-identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), it will be really nice. Also, if anybody is interested to take up the activity of inserting images on efloraofindia pages from efloraofindia posts, pl. let us know. |
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