Rivea ornata (Roxb.) Choisy in Hook. f., Mem. S. Phys. Hist. Nat. Geneve 6: 409 (1834). (syn: Argyreia ornata (Roxb.) Sweet; Convolvulus ornatus (Roxb.) Wall.; Convolvulus tarita Buch.-Ham. ex Wall.; Lettsomia ornata Roxb.; Rivea clarkeana Craib; Rivea laotica Ooststr.; Rivea ornata var. griifithii Clarke);
S-India, Sri Lanka, Myanmar [Burma] (Shan), Darjeeling, Nepal, Thailand, Laos as per Catalogue of Life;
As per efi thread:
Following is the key from Flora of Maharashtra.
1. Woody climbers; peduncles usually 1.flowered; corolla glabrous outside ……………. .R. hypocrateriformis
1. Erect undershrubs or shrubs; peduncles usually 2-7 flowered; corolla appressed hairy only along mid. petaline bands ………….. R. laotica (syn. of Rivea ornata)
Climbing shrubs; branchlets woody, white tomentose. Leaves 6 x 5.5 cm, cordiform, apex obtuse shortly apiculate, base deeply cordate, white tomentose beneath, with pits at the base of lamina; petiole to 4.5 cm, tomentose. Flowers axillary, 1-3 flowered; peduncles 1.5 cm, tomentose; bracts 2 cm, lanceolate tomentose; calyx lobes 1.8 x 0.8 cm, oblong, obtuse, densely tomentose, subequal; corolla salver shaped, lobes twisted, 6 cm long, sparsely pubescent; filaments pubescent at base; ovary 4-celled, style 4 cm, stigmas 2. Berry globose, yellow.
Flowering and fruiting: December-February
Dry deciduous forests
South India and Sri Lanka
(From India Biodiversity Portal on 3.1.14
Request for ID (100509Kalsubai) : Attachments (2). 7 posts by 4 authors.
Came across this one on the way to Kalsubai (May-2008).
Leaves were main pt of attraction, bit leathery, whitish on the back.
This small shrub was around one meter tall. Do help me its Identification..
… has indicated that this shrub could be “Rivea Sp”. Could this be Rivea laotica??
Just a guess
… your guess is right. It is Rivea Laotian.
From persual of refrences at Rivea & at link it appears that there is some taxonomic confusion & Rivea laotica in India may actually be Rivea ornata (Roxb.) Choisy- from me.
Comments are welcome.
efloraofindia:”For Id” wild plant with roundish leaves at Talegaon Dabhade :June 2015: MR-02 : 12 posts by 5 authors. Attachments (1)
Talegaon Dabhade Pune
Requesting to please identify this wild plant with roundish leaves. no flowers or fruits were seen
It is an Argyreia species. (Convolvulaceae)
It reminds Menispermaceae member….wait for flowering
This is early stage of Rivea laotica Convolvulaceae.
Many thanks for the Id of this plant which has interesting leaves
Thanks, …, From persual of refrences at Rivea & at link it appears that there is some taxonomic confusion & Rivea laotica in India may actually be Rivea ornata (Roxb.) Choisy.
Comments are welcome.
It may be Rivea hypocrateriformis.
My thoughts are that the plant is too young to identify… it may be a Rivea, although many species frequently display changes in leaf shape as the plant matures…
I have seen the detailed communication and I agree that the plant is too young to identify. But knowing the area (Talegaon Dabhade) very well, I am sure that this is Rivea laotica (as pointed out by … R.ornata & R. laotica are treated as synonyms but both the names are unresolved according to Plant List).
The Two Revias occuring in Talegaon are Rivea hypocrateriformis & R.laotica. These two Riveas clearly differ in habit, leaf size and shape & inflorescence. Following is the key from Flora of Maharashtra.
1. Woody climbers; peduncles usually 1 flowered; corolla glabrous outside ……………. .R. hypocrateriformis
1. Erect undershrubs or shrubs; peduncles usually 2- 7 flowered; corolla appressed hairy only along mid petaline bands ………….. R. laotica
I will post the images of these two Riveas revealing the these distinct characters.
Regarding the synonyms and correct names for R.laotica & R.ornata, I am not the right person who can comment on.
We can agree … comment. Thanks …
Rivea hypocrateriformis: I’d confirm : 4 posts by 3 authors. Attachments (1)- 3 MB.
I too think of Rivea hypocrateriformis.
is it possible to see the whole plant, please and some flowers and seed pods. the reason is a herbarium specimen from a scientific paper shows leaves, shapes of which look a bit different from the two leaves above.
I think more close to images at Rivea ornata (Roxb.) Choisy in Hook. f. compared to those at Rivea hypocrateriformis (Desr.) Choisy as per comparative images and keys at Rivea
Location: Surkhet, West Nepal
Date: 28 August 2021
Habit : Wild