FLORA OF MADAGASCAR. 217 
Stems densely cæspitose, slender, erect, a foot or more long, 
without any leaves at the flowering time. Flowers in a lax 
raceme 1-2 in. long; pedicels erecto-patent, not more than 4! in. 
long, clasped by a pair of minute lanceolate basifixed bracts at 
the base. Calyx of two ovate green segments 4 in. long. Corolla 
purple, with a small upper lip; lower lip suborbicular, 4 in. long ; 
spur cylindrical, as long as the lower lip. Capsule globose, as 
long as the calyx.— Central Madagascar, Baron 1740! 1861! 
2133! <A near ally of the Angolan U. linarioides, Welw.; Oliver 
in Journ. Linn. Soc. ix. 151. 
MosaciocurAMYs, genus novum Acanthacearum tribus 
Thunbergiearum. (Tab. XXVI.) 
Flores umbellati; umbellze solitariz in bracteola orbiculari spathacea ad 
basin unilateraliter fissa incluse. Calyx minimus, patellieformis, ore ob- 
scure multidentato. Corolla tubus basi cylindricus, sursum infundibularis ; 
segmenta 5, parva, oblonga vel obovata, æstivatione contorta. Stamina 4 
didynama, medio corolle tubo inserta ; filamenta brevia ; antherz apiculate, 
loculis 2 oblongis parallelis, pendula. Ovarium ovoideum, uniloculare, 
ovulis 2 collateralibus erectis; stylus elongatus, filiformis, stigmate parvo 
capitato. Fructus ignotus.—Frutex Madagascariensis sarmentosa, copiose 
ramosa, folis oppositis petiolatis oblongis integris emarginatis, floribus 
parvis umbellatis, umbellis solitariis vel 2-3 in racemum superpositis, 
M. rrAcELLARIS, Baker. (Plate XXVI. figs. 1-6.) 
A. much-branched sarmentose shrub, with slender glabrous 
green quadrangular woody branchlets. Leaves opposite, di- 
stinctly petioled, oblong, obtuse, emarginate, 13-3 in. long, mode- 
rately firmin texture, green and glabrous on both surfaces. Flowers 
4-6 in an umbel on pedicels 1-4 in. long, the umbels solitary on 
short peduncles from the axils of the leaves or 2-3 superposed in 
a raceme, the lower bracteated by a pair of much reduced leaves. 
Bracteole persistent, spathaceous, green, glabrous, 1 in. long, slit 
down to the base on one side. Calyx very short, 4'; in. in diam. 
Corolla about 4 in. long, the segments not more than j in. long. 
Stamens and style not protruded from the corolla-tube.— Central 
Madagascar, Baron 1743! 1789! Only two genera of this well- 
marked tribe of Acanthaces are already known, Meadoncia and 
Thunbergia, from both of which this is abundantly distinct, both 
by characters and habit. 
TivxBERGIA (§ EUTHUNBERGIA) PLATYPHYLLA, D. sp. 
Herbacea, caulibus erectis simplicibus, foliis sessilibus cordatis late 
