436 COMPOSITE, (composite pamilt.) 



24. A. Kahirica, Visiani. .3 to .5, appressed -hairy, 

 branching from base. Leaves ovate-oblong in outline, 2-1-pinnatipartite 

 into very small, oblong-linear, prickly-toothed lobules. Peduncles not 

 thickened ; scales of involucre oblong, obtuse, with broad, scarious 

 margin ; receptacle hemispherical^ all chaffy^ chaff linear, akenes 

 not tubercled, nearly terete, tapering at base, grooved, truncate, bald — 

 Spring — Convent of St, Catherine (Sinai) to middle and upper 

 Egypt. 



25. A. p§euclocotuIa, Boiss. .3 to .4, appressed-puber- 

 ulent, corymbose. Leaves ovate-oblong in outline, bipinnatipartite 

 into oblong-linear, acute lobules. Peduncles at length thickened ; outer 

 scales of involucre lanceolate, inner linear-oblong, long-scarious at tip; 

 receptacle coy^ica?; chaff linear ; dik.Qnes persistent, furrowed, the outer 

 somewhat obpj^ramidal, smooth or slightly tubercied at ribs, the inner 

 obconical-terete, not tubercied, terminating in a concave, entire or 

 somewhat lobed margin — Spring — Coast ; Damascus ; Jordan Valley. 



26. A. rotata, Boiss. .08 to .12, appressed-hairy, branch- 

 ing from neck. Leaves small, oblong in outline, bipinnatipartite into 

 tria7igular-linea7\a.c\ite lobules. Peduncles shorty at length much thicken- 

 ed ; scales of involucre oblong, the inner scarious-margined ; receptacle 

 ovate ; chaff linear-awl-shaped ; akenes persistent., sulcate, ribbed, 

 tubercied at ribs, the outer nearly quadrangular, the inner obconical ; 

 the tip of all truncate, radiate-lobed — Spring — Sinai to Egypt. 



27. A. Tripolitana, Boiss. .3 to .4, sparingly appressed- 

 puberulent, branching from neck. Leaves oblong-spathulate in outline, 

 tripinnatipartite into short, oblong- linear, mucronate lobules. Pe- 

 duncles long, at length thickened ; scales of involucre oblong-linear, 

 obtuse, scarious-margined ; receptacle conical ; chaff awl-shaped ; 

 outer akenes persistent, thicker, shorter, rather pithy, coarsely-grooved 

 and tubercied, loith an entire or ^-toothed or lohed auricle often as long as 

 they, turned imoard at a right angle, inner akenes more slender, rather 

 smooth, with a smaller auricle — Spring — Sandy fields ; coast. 



34, CHAMJEItlELilJlI, Visiani. Chamamelum. 



Heads many-flowered, radiate or discoid. Involucre imbricated, 

 scales more or less scarious. Receptacle convex or conical. Akenes 

 nearly alike, obpyramidal or somewhat compressed, crowned or bald, 

 2-furrowed and 3 -ribbed at inner face, convex and ribless or rarely 1-3- 

 ribbed at back — Perennial herbs with finely dissected leaves. 



* Annuals. 



1, Ch. praecox, M. B. Sparingly pubescent or glabrous ; 

 stems short, ascending. Leaves oblong, pinnatisect into short, filiform, 

 subulate lobules, those of stem sessile ; branches 1-headed, naked 

 above. Heads rayed ; scales of involucre obtuse, rusty-scarious at 

 margin ; receptacle conical ; ajlienes loith 2, slender ribs at hack, and 2, 

 umall glands at tip ; crown obtusely lobed, one-third to one-half as long 

 as akene — March and April — Hills and fields ; Aleppo. 



2. Ch. inodorum, L. Glabrous ; stems erect or diffuse, 

 branching. Leaves bipinnatisect into linear, diverging, acute lobules ; 

 branches leafy to near tip. Scales of involucre obtuse, scarious- 



