206 LXX. COMPOSITA. 
cral scales imbricate, lanceolate. Receptacle nude, honey- 
combed. Filaments glabrous; anthers exserted, long-tailed. 
Achenes beakless, oblong, villous. Pappus copious (save in 
P. Huttoni), in many rows, of shortly plumose or barbed 
bristles —FU. Cap. iii. p. 518; Thes. Cap. t. 158. 
Branching, more or less tomentose shrubs. Leaves alternate, sessile, 
crowded, woolly beneath, mostly nude above. Heads terminal; rays 
white blue or purple; disk yellow.—5 species, dispersed. 
143. DICOMA, Less. 
Heads many-flowered, discoid or radiate; rays, when pre- 
sent, neuter, ligulate, bilabiate or terete-tubular ; disk-flowers 
regular, 5-parted, the lobes longer than tube ; corolla generally 
pubescent. Involucral scales imbricate in many rows, equal- 
ling the disk, entire, acuminate, often pungent, broad or 
narrow. Receptacle honeycombed. Anthers with long, 
barbed tails ; filaments glabrous. Achenes turbinate, villous, 
beakless, often 10-ridged. Pappus in 2 or more rows, of 
shortly plumose bristles.—7. Cap. i. p. 515; Thes. Cap. 
t. 68. 
Small undershrubs. Leaves alternate, entire or toothed. Heads solitary. 
—11 species, dispersed. 
144. GERBERA, Gron. 
Heads many-flowered, radiate ; ray-flowers in 1 or 2 rows, 
those of the inner row, when present, short and subtubular, of 
the outer bilabiate, the outer less ligulate, 3-toothed, the 
imner minute, 2-fid; disk-flowers subbilabiate, the outer 3-, 
inner 2-fid. Involucral scales oblong or lanceolate, imbricate, 
subherbaceous. Receptacle nude. Anthers tailed. Achenes 
beaked or nearly beakless. Pappus copious, of rough bristles. 
Fil. Cap. iii. p. 519. 
Stemless, perennial herbs. Leaves all radical, petioled, entire or pinnate- 
lobed. Scapes 1-headed. Flowers yellow or orange, the rays often coppery 
outside.—15 species, dispersed. ; 
145. PERDICIUM, Lag. 
Heads many-flowered, discoid; marginal flowers female, 1- 
seriate, tubular, bilabiate, the outer lip shortly ligulate, 3- 
toothed, inner shorter, 2-parted, with linear lobes ; disk-flowers 
also bilabiate, the outer lip unequally 38-toothed, inner 2- 
parted. Involucral scales leafy, imbricate, lanceolate, ap- 
pressed. Anthers tailed. Achenes ovate-oblong, beaked ; 
terminal callus dilated. Pappus multiseriate, of scabrous 
bristles, falling off with the epigynous disk or annulus.— 
Fl, Cap. iii. p. 5238. 
