816 DICOTYLEDONE.JE, ECHINOCYSTIS, 
breviter villosus cæterum glaber, levis, 5-6 metr. longus. Petiolus 
gracilis, striatus, sparse breviterque villosus præcipue ad apicem, 
3-7 cent. longus. Folia utrinque leete viridia, supra tenuiter punctato- 
scabra, subtus sublævia, margine integerrima vel minutissime remo- 
teque dentieulata, 7-129 cent. longa lataque, plerumque ad medium 
lobata; lobis anguste triangularibus vel interdum lanceolatis, acutis 
et mucronatis rarius obtusis, superiore paulo longiore ; sinus basilaris 
late rotundatus, 4-15 mill. profundus; nervi utrinque leviter promi- 
nentes, supra brevissime hirtelli. Cirrhi satis graciles, elongati, striati, 
subglabri. Pedunculus communis masculus gracilis, striatus, sparse 
breviterque villosus, 4-20 cent. longus, fere usque ad basim floriferus; 
rami sæpius breves, erecto-patuli; pedicelli capillares, divaricati, 
breviter villosi, 2-6 mill. longi. Calycis tubus albescens, 2-3 mill. la- 
tus; dentes patuli, capillares, 1-1 '/, mill. longi. Corolla alba, seg 
mentis erecto-patulis, lanceolato-linearibus, acutis, 3-sub-5-nerviis, 
utrinque villoso-glandulosis præcipue ad apicem, 4-5 mill. longis, 
7/,71 mill. latis. Columna staminea glabra, brevissima ; capitulum an- 
therarum ovoideum, 1 mill. longum, apice leviter papillosum, loculis 
triplicatis. Flores feminei solitarii vel rarius geminati, cernui, masculi 
paulo majores. Pedunculus fructiferus gracilis, subglaber, */;-1 cent. 
longus. Fructus glauco-virens, glaber, 4-5 cent. longus, 3-4 cent. 
crassus ; aeulei subsetacei, basi vix dilatati, 3-5 mill. longi. Semina 
atro-fusca, oblonga, basi truncata et leviter attenuata, 15-16 mill 
longa, 7 mill. lata, 3-3 '/, mill. erassa. : 
In America septentrionali : ad flum. Saskatchawan et lac. Winnipes 
usque ad Virginia, Kentueky et Colorado (Muhlenberg in herb. Willd. 
et n. 127 in herb. Monac.; Engelmann; Paterson n. 980; Wright; 
Sullivan ; Henning n. 32; Jones n. 640; Bourgeau ; Curtiss n. 980, ete.). 
SECT. III. — MARAH. 
Genus Marah Kellogg, 1. c. (1855). — Megarrhiza Torrey, Lc. 
(nomen tantum, — 1854); Watson, l. c. (1876). 
Radix magna, perennis. Flores 5-8-meri. Fructus bacca exsut? 
demum sicca, apice irregulariter lacera, 2-4-locularis, loculis es 
mis. Semina magna, turgida, Iævia. Germinatio hypogæa. Spec ipe 
18. E. fabacea (Naud.! in Ann. sc. nat. ser. 4, v. 12, P- iem 
tab. 9); foliis leviter 5-7-lobatis; staminodiis nullis; ovario glabro, 
