SCHOMBURGK's GUIANA PLANTS. 2lT 



Tribe, Rondeletie^. 



456. Aspidanthera Rudgeoides, gen, nov. — Islands on the 

 Rio Negro, Schotnburgk^ n. 969, 



Char. Gen. Calyx obovoideus, limbo brevissimo 4-den- 

 tato. Corollce tubus longus gracilis, faux dilatata nuda, limbi 

 laciniae 4, latse, obtusae, patentes, aestivatione contorto-imbri- 

 cativa. Stamina 4, medio tubo inserta, exserta. Anthercc 

 lato-ovat£e, recurvo-convexse. Ocarmm subcarnosum, bilo- 

 culare, ovulis in quoque loculo plurimis biseriatis, deorsum 

 imbricatis. Stylus filiformis, stigmalibus 2 brevibus diver- 

 gentibus. Fructus .... 



A. Rudgeoides. Frutex glaber. Folia ovata v. ovato-lanceo- 

 lata, 4 — 6-poll. longa, acuminata, basi late cuneata, membra- 

 naceo-chartacea, suprema, sub inflorescentia, saepe parva co- 

 lorata. Stipulae subfoliaceae, lanceolatae, T — 8-lin. longae, 

 decidual. Panicula thyrsoidea, densa, terminalis, ramis bre- 

 vibus tricbotomis, floribus subsessilibus. Flores albi, juniores 

 tomento pulverulento cito deciduo vestiti. Corollae tubus 8 — 

 9-lin. longus, limbi laciniae crassiusculee, margine undulato- 

 crispae. Ovulse in quoque loculo ovarii circa decern. 



The appeaiance of the specimens is precisely that of the 

 figure ofRudgea lanceafolia, Salisb., Linn, Trans, v. ix. t. 18 ; 

 but the characters of the flower are totally different from 

 that given by Salisbury. The genus is probably allied on the 

 one hand to Cateshcea, on the other to Rondeletia. 



457. Rondeletia capitata (n. sp.) ; foliis ovatis obtusiuscu- 

 lis basi rotundatis utrinque ramisque hirsutis, stipulis longe 

 subulato-acuminatis, pedunculis axillaribus folio brevioribus 

 apice cymoso-capitatis, bracteis lineari-subulatis hirtis, flori- 

 bus tetrameris, calycis l)ispidi laciniis linearibus, 2 majoribus 

 corollae hirtse tubo dimidio brevioribus. — Specimen unicum 

 tantum suppetit. Folia pollicaria, bi-evissime petiolata, venis 

 lateralibus utrinque circa 5 subtus valde prominentibus. Sti- 

 pulae utrinque solitaria?, hirtae, petiolo longiores. Corollse 

 tubus tenuis 2 lin. longus, limbi laciniae 1^ lin. Stamina 

 inclusa. Stylus subexsertus, lobis stigmatiferis 2 subulatis. 



Vol. III.— No. 20. 2 F 



