470 
47. COMPOS1TACEJE. 
inconspicuous, without apparent ray, hemispherical, 3-4 or 5 
lines in diam. ; fl. dull w. ; ligules short and narrow hut very 
numerous and crowded. Scales gr. leafy broadly ovate or oval 
acute strigose. Ach. of disk pale sandy-brown oblong sub- 
clavate obcompressed subtetragonal or 4-ribbed irregularly ru- 
gulose or corrugate, black at top, smooth and naked, without 
crown or pappus ; of ray triquetrous and even but otherwise 
similar. Epigynous disk rather prominent or mamillate um- 
bilicate, surrounded with a slightly raised and waved sub- 
quadrangular very narrow black outer rim or border, the space 
between the central mamilla and outer border black and clothed 
with a few w. strigose hairs. 
I have never consciously met with the true E. prostrata L. 
in Mad. — a pi. of altogether smaller size with much branched 
prostrate st., small ovate 1. and very shortly stalked or nearly 
sessile heads (Pluk. ! Aim. 1. 118. f. 5 and herb, in Herb. Sloane, 
vol. 94. fol. 175 in BH. j Dill. Elth. 1. c. t. 113. f. 138). But 
a Mad. spec, sent by me to the late Chev. de Candolle as E. 
erecta L. was referred by him (Prodr. v. 490, as previously in 
his letters) to E. prostrata. Hence I have possibly in Mad. 
overlooked the latter pi., which, however, after all, is perhaps 
merely a depauperated state or var. of E. erecta L. 
§ 2. Anthers caudate or aivnecl at the base. 
A. Becept. scaly or chaffy all over. 
Tribe XIII. Buphthalmecs Less. 
22. Asteriscus Mnch. 
( Nauplius Cass., Odontospermum Neck., Schultz in WB.) 
1. A. AQUATICUS (L.). 
Herb. ann. ; st. proliferously 1-3-branched close beneath each 
fl., branches very still’ wide-spreading or divaricate ; 1. oblong 
obtuse subspathulate entire, the lower attenuately stalked, up- 
per ligulate sessile semiamplexicaul arcuately reflexed ; heads 
many-leaved at their base, 1. of outer involucral scales linear- 
lanceolate not cuspidate, inner scales oval obtuse without or 
rarely with a leaf at top ; tube of cor. and ach. of ray not winged. 
— DC. v. 480 ; Koch 391 ; Gr. et Godr. ii. 172 ; REG. xvi. t. 48. 
f. ii. ; Willk. et Lange El. I lisp. ii. 47. Buphtliahnum aqua- 
ticum Linn. Sp. 1274 ; Deaf. ii. 290 ; Brot. i. 390; Pers. Syn. ii. 
474 ; Buck 195. no. 209 ; El. Gr. ix. t. 899. Odontosperimun 
