433 COMPOSITE, (composite family.) 



Yar, discoi<1ea, Boiss. Heads discoid — Mountains through- 

 out. 



2. A. altissiuia, L. © .3 to .8 ; stem rather rigid, branching. 

 Leaves ovate-oblong in outline, 2-3-piunatipartite into ovate-lanceolate, 

 prick ly-mucronate lobules. Peduncles at length thickened ; heads 

 .03 to .04 broad ; outer scales of involucre lanceolate, inner oblong, 

 scarious ; chaff oblong-spathulate, abruptly contracted into a 2)ricMy 

 cvp, someicliat longer than Jloicerets ; rays ellijDtical-linear ; akenes 

 compressed, 4-angied, "with acute, lateral angles, 10 ribs on each face, 

 and a thin, membranous crown — April to August — Fields ; coast to 

 middle mountain regions, and interior plains. 



3. A. Palse§tiiia, Rent. .2 to .3, sparingly hirsute, erect, 

 branching from neck, branches usually decumbent. Leaves ovate-ob- 

 long in outline, bipinnatipartite into ovate-oblong, mucronate lobules. 

 Peduncles at length thickened ; heads .02 to .03 broad ; outer scales 

 of involucre ovate-triangular, acute, inner oblong, obtuse, scarious at 

 tip ; chaff cuneate, keeled, truncate, unarmed or ending in a short 'point., 

 the outer sometimes tapering to a point longer than the involucre ; 

 akenes as in last — Spring — Fields ; coast to middle mountain regions, 

 and interior plains. 



4. A. ecelopoda, Boiss. © Puberulent or glabrescent ; stem 

 erect, divaricately branched. Leaves ovate in outline, bipinnatisect 

 into minute, oblong-linear, callous-tipped, spreading lobules. Pedun- 

 cles at length very thick and hollow; heads .02 to .03 broad ; outer 

 scales of involucre oblong -lanceolate^ acuminate., inner obtuse, scarious at 

 tip ; chaff oblong-linear, l^eeled, tapering into a point shorter than the 

 pale; akenes obsoletely 1-3-nerved on each side — Spring — Anti- 

 lebanon. 



Var. Bourga^i, Boiss. Branches less forked ; lobules of leaves 

 narrower ; heads rather smaller — Base of Lebanon near Sidon ; 

 Amanus. 



5. A. lyonnetoide§, Boiss. © .05 to .1, crisp-hairy. Leaves 

 small, oblong-linear in outline., pinnatipartite into lanceolate, mucronate, 

 entire or 2-3-fid lobes. Heads discoid., .003 to .005 broad ; scales of in- 

 volucre oblong, scarious, with a thicTc, hrown nerve ; chaff oblong, 

 keeled, somewhat fringed, mucronate ; akenes small, smooth — May 

 and June — Alpine Antilebanon. 



6. A. Ca§sia, Boiss. 24! .3 or more, appressed-silky, canescent, 

 producing short, sterile, leafy twigs, and fertile, nearly simple, 1-head- 

 cd stems. Lower leaves long-petioled, ovate-oblong in outline, pin- 

 natipartite into few, linear or linear-oblong, entire or 2-3-cleft, rather 

 obtuse, .01 to .02 long lobes, up]3er leaves oblong, sessile. Heads .03 

 broad, long-peduncled ; scales of involucre rather broad, the outer acutish, 

 the inner obtuse, narrowly scarious ; rays as long as disk ; akenes 

 whitish, short, surmounted by a rather long, delicate crown — June — 

 Cassius. Immature specimens collected in April from el Kaff in the 

 Nusairy Mountains seem to belong to this species. 



7. A. montana, L. 11 .25 to .4, appressed-canescent, silky, 

 producing from the root-stock short, leafy twigs, and erect or ascend- 

 ing, simple or somewhat branching stems. Leaves usually 2-pinnatisect 

 into linear, obtuse or acute, muticous lobes, Heads .03 to .03 broad ; 



