528 



Ordo CL. CONVOLVULACEAE Vmtenat. 



(Choisy in DC. F 565. — 



Melsn. Gener. plant. vascul. I. 273. 274. II. 181. — Ad LANA- 



CEAE Rchb. - 



Tribus I. ARGYREIEAE Choisy I. c. 325. 



I. (3809.) RIVEA Clioisy. 

 Choisj in DC. Prodx. IX. 325, 



II. (3814.) MARIIW Aublel. 

 Choisj in DC. Prodr. IX. 327.) 

 1. M. DENSIFLORA Btli. in Book. Lond. jonrn. of bot. V. 351. f — Caule seandente gla- 

 bro; foliis ovato- vel oblongo-ellipticis acuminatis glabris; paniculac tcrminalis glabrae 

 pedunculis brevibus confertim mullifloris; bracteis minulis; sepalis exlerioriboa glabris, 

 inlerioribus cxtus basi sericeis; corolla scricco-villosa. i>w — Ramuli saepe TOlubiles, 

 folia coriacea nitida 4— 6-pollicaria, panicula fere pedalis pyramidala, basi foliata sub- 

 flexuosa glabra, pedunculi bipollicares, superiorcs breviorcs aphylli, cymae 10— 15-florac. 

 — Crescit in Guiana Britannica ad Rio Padaevire. 



III DIC RWOSTYLIS Bth.*) 



Rili. in Hook. Lond. journ. of bot. V. 355. 

 Calyx cjuinquefidus, laciniis imbricatis. Corollae tubus brevis, limbus pa- 

 tens quinquepartitus, segmentis aestivatione valvato-induplicatis. Stamina 5 

 tubo corollino inserta, antherae versatiles, loculis contiguis, connectivo sub- 

 nullo. Ovarium (incomplete?) biloculare, ovulis in loculis geminis ascendenti- 

 bus. Stylus apice bifidus, lobis apice capitato-stigmatosis. Fructus....? — Fru- 

 texGuianensis habita Lysiostyli: ramulis junioribus, petioliset inflorescentia te- 

 nuissime tomentoso-cinerascentibus; foliis allernis petiolatis 3 — 4-poIlicaribus 

 oblongis, longe abrupteque acuminatis, basi cuneatis et breviter complicatis 

 coriaceis, utrinque glabris, supra nitidulis, subtus pallidis, costa media pro- 

 minula, tenuiter venosis; paniculis axillaribus racemiformibus 1 — 2-pollicari- 

 bus; cymis subtrifloris subsessilibus; bracteis parvis squamaeformibus acutis, 

 pedicellis brevissimis. 



1. D. SCANDE.NS Bth. 1. c. — Calvx tomentcllus vix lineam longus, laciniae orbiculatae 

 obtusae, corollae tubus glaber calycem aequans, apice in faucem expansus, limbi laci- 

 niae fere 2 lin. longae, extus appresse pubescentcs acutiusculae, leviter inflexae, non 

 mucronatae, tilamenta dilatata glanduloso-hirtclla, eorollam aequantia, stylus glaber fili- 

 formis, lobi breves filiformes. — Crescft in Guiana Brilannica ad Camanow. 



IV. LEGE^DREA B. Webb. 

 (Choisy in DC. Prodr. IX. 328.) 



*) Genus proximum Lysiostijli Bth. infra inter Erycibeat desmbendo, Ery- 

 cibeas autem a Candolleo propter aettivationem differentem, ttigma quinartum et 



pracsertim pronter ovarium unilocutare a Convolvulaceit separalas, ilerum rian 

 illit consocwndas esse docuit JU. Bentham in Hook. Lond.journ. of bot. V. p. 357. 



