CITRULLUS. CUCURBITACEJE (AUCT. COGNIAUX). 507 
5-10 cent. longus. Folia 6-7 cent. longa, 5-6 cent. lata, margine mi- 
nute irregulariterque denticulata, pedato-5-nervia ; sinus basilaris 
angustus, acutus, 1 cent. profundus. Flores masculi solitarii; pedun- 
culus capillaris, flexuosus, sparse hirsutus, 4-5 mill. longus. Calycis 
tubus anguste campanulatus, breviter villoso-hirsutus, 2 */, mill. lon- 
gus, apice 1 ‘/, mill. latus; dentes anguste triangulares, 1 mill. longi. 
Corolla leviter villosa, 4 mill. longa, segmentis oblongis, acutis. Pe- 
dunculus femineus 6-8 mill. longus, dense hispidus. Fructus 15 mill. 
longus, 12 mill. crassus. Semina sordide alba, ovato-oblonga, ad basim 
contracta et Sri margine tumido eireumcineta, 6 mill. longa, 
3 mill. lata. 
In Abyssini: prov. Tigré (Schimper n. 1457 in herb. Kew. et Brit. 
Mus.). 
B. Caulis erectus ; cirrhi nulli. 
26. C. rigidus (E. Meyer! ex Arn. in Hook. Journ. of. Bot. 3, 
p. 278, nomen tantum); perennans; foliis canescenti-cinereis, crassis 
rigidisque, utrinque scaberrimis, ambitu ovatis, 'crenulatis vel plus 
minusve trilobatis, lobis ovatis, obtusis, intermedio longiore, sinubus - 
rotundatis; ovario oblongo, setis crassiusculis rigidisque dense hor- 
rido; fructu ovoideo, echinato. — Sond. in Harv. et Sond. Fl. Cap. 2, 
p. 497. 
Caulis robustus, ramosus, angulatus, pilis rigidis crassis adpressis 
dense vestitus; rami patuli. Petiolus robustus, rigidus, sulcatus, sca- 
berrimus, 1-3 cent. longus. Folia 3-4 cent. longa et fere totidem lata, 
margine sparse irregulariterque dentata, basi truncata vel leviter 
attenuata, trinervia, nervis subtus valde prominentibus. Flores mas- 
culi subsessiles, fasciculati. Calycis tubus anguste campanulatus, 
dense canescenti-villosus ; dentes triangulares, breves. Flores feminei 
solitarii: pedunculus niis robustus, ‘,-1 cent. longus. Fructus 
4-5 cent. longus, 2 */,-3 cent. crassus, ad maturitate ruber; aculei 
eng compressi, 5-6 mill. longi. Semina compressa immarginata. 
In Africa australi ad Gariep (Drège in herb. Boiss., Deless., Le- 
norm., Berol., Vindob., hort. Petrop., Lugd.-Bat., Kew. L ad Nama- 
qualand (Wyley sec. Sonder). 
XXII. CITRULLUS, Neck. Elem. 1, p. 240; Schrad. in Eckl. et Zeyh. 
Enum. pl. Afr. austr. 2, p. 279 et in Linnaea, 12, p. 412; Meisn. 
Gen. p. 126 (91); Spach, Vég. phan. 6, p. 212; Endl. Gen. p. 9; 
Rem. Syn. fase. 2, p. 12, 49; Webb et Berth. Phyt. Canar. 2, 
