9 
LIMNOPHYTON. ALISMACEJE (AUCT. M. MICHELI). 39 
verticillos irregulares disposita, omnino libera. Ovula basilaria, soli- 
taria, mieropyle extrorsa. Stylus ex angulo interno ovarii oblique ortus, 
crassus, deciduus stigmate capitato coronatus. Carpella irregulariter 
verticillata, crassa, ossea, parietibus lateralibus divisis et inflatis 
pseudo-trilocularia. Semina basilaria, erecta, uncinata, testa tenui. — 
Herbæ paludosæ, perennes, rhizomate brevi, foliis radicalibus, petio- 
latis, limbo sagittato, vasis lactiferis percurso, scapis erectis. Inflores- 
centia racemosa vel paniculata. Flores pedicellati, remote verticillati, 
in quoque verticillo plures vicissim florentes, bracteis 3 exterioribus 
et braeteolis interioribus fulti, superiores masculi, inferiores masculi 
et hermaphroditi. 
Species adhuc unica, in Africa tropicali et India orientali obvia. 
7. L. obtusifolium Miq. l. c. Sagittaria obtusifolia Linn. Spec. 
ed. 1, p. 993. Alisma sagittifolium Willd. Spec. 2, p. 277. Al. Kotschyi 
Hochst. Fl. 1843, p. 499. Sagittaria nymphæifolia Hochst. pro parte 
ibid. Al. obtusifolium Thwaites. Enum. pl. Zeylan. p. 332. Dipseudo- 
chorion sagittifolium Buchen. Flora 1865, p. 241. 
Rhizoma breve, fibrillis radicalibus, longis dense obductum. Folia 
omnia radicalia; petioli striato-canaliculati, nonnunquam puberuli, 
intus lacunosi, 20 cent. longi ; limbi sagittati, lobo medio, lato, obtuso 
vei rarius acuto, lobis basilaribus, divergentibus, elongatis, acumina- 
tis, glabri vel utrinque puberuli, 6-7 cent. longi, 7-8 cent. lati, nervis 
primariis 11-13 vix prominulis, secundariis obliquis, remotis, vena- - 
rum rete irregulari; vasa lactifera in sieco parum conspicua. Scapi plu- 
res vel singuli, simplices vel basi parce ramosi, erecti vel rarius sinuato- 
prostrati, nonnunquam puberuli. Flores in quoque verticillo 4-15; 
pedicellis marium gracilibus, 7-10 mill. longis, hermaphroditorum 
crassioribus, longioribus, post anthesin reflexis. Sepala ovata, obtusa, 
1-5 mill. longa, vix concava, multi-costata. Petala anguste ovata, basi 
cuneata, Stamina 6, in floribus Y majora; filamenta complanata, basi 
dilatata, glanduloso-pubescentia, antheris late ovatis, sub-sagittatis, 
sesquilongiora. Ovaria, in floribus Y vestigia nulla, in floribus $ 15-20 
supra receptaculum in verticillos 2-4 fere regulares disposita, ovata. 
Carpella obovata, stylo caduco mutica, vel mucronata 6 mill. longa, 
. +5 mill. lata, dorso tricostata. Semina hippoerepica, cruribus distinc- 
tis, testa tenui, fere lævi. 
In Africa tropicali occidentali et orientali : Senegal (Perrottet n. 807 
Sag. nymphzeifolia Hochst. in schedulis), Senegambia (Heudelot, Per- 
rottet), Guinea (Thoning), Nupe ad flumen Niger (Barter in herb. 
