710 Umbelliferae. 
401. (24.) Orlaya Hoffm. 
Calyx-margin 5-toothed. Fruit oblong, dorsally compressed. 
Primary ribs filiform, bristly, secondary ones keeled, with 1—3 rows 
of prickles of equal length, or the outer longer. Vittae 1 under 
each secondary rib. Inner face of albumen flat. —- Annual herbs, 
with white flowers. 
A small genus of only a few species in the Mediterranean region. 
1006. Orlaya maritima Koch Gen. Umbell. (1824), p. 79. — 
Boiss. Flor. Or. Il, p. 1071. — Rehbch. Ic. XXI, tab. 205 fig. I—IL 
— Aschers.-Schweinf. Ill. Flor. d’Eg., p.81 no.479. — Sickenberg. 
Contrib. Flor. dEg., p. 241. — Aschers.-Schweinf. Primit. Flor. 
Marmaric., p. 651 no. 140. — Aschers. Flor. Rhinocol., p. 797 no. 124. 
— An annual plant, 10—30 cm long, grey-velvety, branching from 
the neck. Leaves ovate-oblong in outline, 2—3-pinnatisect into 
minute, ovate-oblong, obtuse lobes. Rays unequal, 3—5; bracts of 
the involucre and involucel filiform, or the former dissected into 
filiform lobes; fruit elliptical, 1 cm long, 6 mm broad; prickles in 
1—2 rows, triangular at the base, barbed at the tip, usually shorter 
than the breadth of the seed. — Flow. March to April. 
M. ma. Marmarica: Matruqa; Ras-el-Kena’is; Abusir; Mariut; 
Montaza; Alexandria-West and -East; Mandara; Abukir. — M. p. 
Rosetta; Damietta. — D. i. Scattered in the desert. 
Local name: shamar-el-gebel (Ascherson). 
Also known from all the other parts of the Mediterranean region. 
402. (25.) Ammodaueus Coss. and Dur. 
Calyx 5-toothed. Petals equal, subemarginate. Fruits oblong, 
lenticular-compressed from the back; mericarp with primary and 
secundary juges; primary ridges 5, filiform or sparingly setiferous. 
Carpophor bipartite. Seeds convex from the back, complanate from 
the face. — Small, annual herbs. Leaves bi- or tripinnatisect, lobes 
linear, fleshy. Umbels bi- or triradiate; leaves of the involucrum 
pinnatipartite or tripartite. All the flowers bisexual with white petals. 
A small genus of only one species in the Sahara-region. 
1007. Ammodaucus leucotrichus Coss. and Dur. ap. Kralik 
Plant. alger. Select. exsicc. (1858), no. 42. — Coss. and Dur. in Soe. 
Bot. Franc. VI (1859), p. 393. — Aschers.-Schweinfurth Ill. Flor. 
WEg., p.81 no. 483. — Torilis leucotricha Coss. and Dur. olim ap. 
Coss. Voy. Bot. Alg. in Ann. Se. Nat., Sér. IV Vol. 1V p. 284. — Small, 
annual plant, 15—20 em high. Stems slightly striate, glabrous, 
branching from the base. Leaves green, petioled, somewhat sheathing 
