SOUTH AMERICAN BOTANY. 29] 
laciniis patentissimis lanceolatis acutis. Squame 5 brevis- 
simee, obtusee, integerrime, erectze, ad basin gynostegii. 
Anthere membrana terminate. Masse pollinis clavato-cy- 
lindraceze, pendula. | Stigma elongatum, subfiliforme, apice 
bifidum.— Frutices subvolubiles undique leviter. pubescentes. 
Folia membranacea, cordata, acuta, basi profunde biloba, 
Pedunculi axillares folio longiores, corymbosi. Corymbi 
pauci-(4—6) flori. Flores parvi, ut videtur, ochroleuci. 
713. (1) Brachylepis Candolleanus.—Cynanchum Candol- 
leanum. Gill. MSS.—On bushes and trees in the valleys 
and uncultivated places in the province of Mendoza. Along 
the fort of Ceno Grande, Uspallata. Dr. Gillies. 
Tweepia, (Nov. Gen.) Hook. & Arn. 
. Calyx 5-partitus. Corolla campanulata, quinquefida, laci- 
niis acuminatis, fauce coronata, squamis 5 carnosis retusis vel 
bifidis, exsertis, sinubus oppositis. Corona staminea nulla. 
Anthere membrana terminate. Masse pollinis ventricose, 
apice attenuato affixes, pendule. Stigma elongato-acumina- 
tum, bipartitum.—Suffrutices volubiles. Folia opposita mem- 
branacea. Umbellee axillares. Flores majusculi. . 
This genus is allied in some points to Metastelma, but is 
readily distinguished by the long bifid acumination of the 
stigma, the form of the corolla, with its narrow segments, - 
and the scales which crown the throat, which are not mere 
tooth-like processes, but large, obtuse and fleshy. The 
Genus is dedicated to Mr. Tweedie, whose botanical re- 
searches have greatly extended our knowledge of Extra- 
tropical South-American plants. Wight, MSS. — 
714. (1) Tweedia birostrata. Hook. & Arn.— Cynanchum 
birostratum. Hook. & Arn. in Bot. of Beech. Voy. v. i. p. 35. 
— Valparaiso. Mr. Cruckshanks. Bridges, (N. 160.) Cuming, 
(N. 520.) Mathews, (N. 194.) Conception, Lay § Collie. 
- 715. (2) Tweedia macrolepis (Hook. & Arn.) ; caule volu- 
bili pubescente, foliis subcoriaceis oblongis acutissimis glabris 
basi cordatis ciliatis, umbellis pedunculatis pubescenti-hir- 
sutis densifloris, floribus majusculis, squamis valde carnosis 
