FLORA OF MADAGASCAR. 317 
Baron 5717! I find I used twice the specific name divaricata 
for a Medinilla, so Baron 3658, described in Journ. Linn. Soc. 
vol. xxii. p. 478, may be changed to M. Baront. 
ROTANTHA, genus novum Lythrariearum. 
Calycis tubus brevis campanulatus; segmenta 4 ovata patula, tubo 
longiora. Petala 4 oblonga unguiculata, ad tubi oram inserta, cum seg- 
mentis alterna. Stamina 8 cum petalis inserta; filamenta filiformia 
petalis longiora; antherz parva globose. Ovarium globosum superum, 
ex calycis tubo protrusum triloculare ; ovula in loculo plura, superposita ; 
stylus filiformis; stigma capitatum. Fructus globosus indehiscens mag- 
nitudine pisi. Semina plura parva angulata ; testa tenuis brunnea. 
Closely allied to the Cape Heteropywis, Harv. Thes. ii. t. 128. 
ROTANTIIA COMBRETOIDES, Baker. Species sola. (Pl. LI.) 
An erect shrub or small tree, with the habit of a Combretum, 
glabrous in all its parts. Branchlets slender, terete. Leaves 
oblong, entire, opposite, membranous, 14-2 in. long, narrowed 
gradually from the middle to the base on a short petiole, green on 
both sides, not pellucido-punctate. Flowers in an ample decom- 
pound terminal panicle with spreading main branches; pedicels 
about as long as the calyx. Bud green, globose. Expanded 
calyx l in. diam. Petals „!; in. long, pale. Filaments j in. long. 
— Baron 2194! 5032! 5169! 
MoDEccA CLADOSEPALA, n. Sp. 
Sarmentosa, cirrhifera, glabra, ramulis lignosis glabris, folis ignotis 
hysteranthiis, floribus copiose racemosis, calycis segmentis elongatis supra 
basin eylindrieis, petalis lanceolatis sepalis brevioribus, ovario oblongo 
breviter stipitato, pericarpio coriaceo lzevi. 
A woody climber, with slender terete stems and simple ten- 
drils. Flowers laxly racemose on the short woody branchlets ; 
pedicels 3 in. long. Calyx 3 in. long, with a short campanulate tube 
and long cylindrieal segments from an ovate base. Petals about 
din. long. Mature? ovary oblong, 2-3 in. long, with a smooth 
green coriaceous pericarp.— Province of Androna, Baron 5705! 
MODECCA MEMBRANIFOLIA, N. Sp. > 
Sarmentosa, cirrhifera, glabra, caule suffruticoso, foliis pinnatim quin- 
quefoliolatis, foliolis oblongis obtusis membranaceis, floribus parvis corym- 
bosis, sepalis petalisque lineari-oblongis zequilongis, ovario oblongo distincte 
stipitato. . 
A suffruticose climber, glabrous in all its parts. Petiole 11- 
