SYNANTHERE^. 379 



43. POROPHYLLUM, Vaill. ' 



Head discoid. Involucre ^ -serial : scales valvate, at first connected, at length distinct. 

 Style-branches with hispidulous appendages. Achenium elongated, tapering above : pappus 

 pilose, of many soft hairs. — Glabrous herbs ; leaves usually alternate, glaucous ; heads long- 

 peduncled, purple. • 



131. P. ruderale, Cass. Annual, erect; leaves petioled, oblong-lanceolate or oblong, 

 pointed or blunt, crenate or entire ; peduncles subequal ; heads cylindrical ; involucral A 

 scales 5, oblong-linear, callous at the point ; corolla-limb equal ; achenium linear, compressed, ' 

 hispidulous. — Jacq. Amer. Pict. 1. 195. — Kleinia, Sw. Cacalia Porophyllnm, L. P. ellipti- 

 cum, Cass. : the blunt-leaved form, which is less common in the West Indies ; the leaves in 

 both are dotted with large, scattered glands. — Hab. Jamaica I, Al., Wils., a weed ; Antigua !, 

 Wullsdd., Dominica I, Imr., S. Vincent I, Guild. ; [Cuba ! and Mexico ! to Buenos Ayres I 

 and Peru ! ; Galapagos !]. 



Subseries 4. Heleniese. — Disk-flowers hermaphrodite. Pappus of distinct scales. — 

 Leaves usually alternate, but opposite in the West Indian genera. 



43; GALEA, i., Pi. Br. 



Head discoid or radiate : ray-flowers ? . Involucre imbricate. Eecepiacle conical, 

 paleaceous. Style-branches subtruncate, or with a minute conical appendage. Achenium 

 slightly angular J pappus of 20-10 (-5), linear setaceous, uninerved, pinnatifid-striate, ser- 

 rulate scales. — Shrubs ; leaves opposite, scabrous-pubescent, triplinerved, glandular beneath ; 

 heads in terminal or axillary corymbs, purplish or yellou) ; corolla-lobes veinless between 

 the marginal nerves. 



J32. C. jamaicensis, L. Leaves ovate or ovate-lanceolate, pointed, serrate or sub- 

 entire, densely scabrous-piibeacent, rounded at the shortly-petioled base ; heads discoid, in 

 umbelliform corymbs, single or glomerate ; involucral scales ovate and ovate-oblong, blunt ; 

 palese bluntish ; achenium glabrous, papillose above, as long as the pappus. — SI. <. 151. /. 3. 

 — C. cordifolia, &ui. ! : agreeing with Linnseus's species (compared by Dr. Alexander in the 

 British Museum), except by having broader, serrate leaves, and a richer inflorescence : such 

 differences however occur on the same branch.— Leaves 2"-] "long; heads 3"'-4"'long, 

 15-20-ttowered. — Hab. Jamaica I, Sw., Macf., Al., Wullschl., in mountain-thickets. 



133. C. solidaginea, Kth. Leaves ovate-lanceolate, acuminate, subserrate or entire, 

 scabrous above, puberulous or glabrescent beneath, cuneate at the base, petioled; heads 

 discoid, in umbelliform corymbs ; involucral scales ovate-oblong and oblong-lanceolate, in- 

 terior and palcEe blunt at the acuminate top ; achenium pubescent, shorter than the pappus. 

 — Kth. N. Gen. t. 407.— A " sweet-smelling " shrub ; leaves 3"-2" long ; heads 4'" long. 

 —Hab. Trinidad !, Lockh., in dry soil; [Venezuela]. 



44. GALINSOGA, R. P. 



Head radiate (or discoid) ; ray-flowers ? , its ligules small, roundish. Involucre 1-serial. 

 Receptacle conical, paleaceous. Style-branches short, with a conical point. Achenium 

 angular : pappus of 8-16, lanceolate, acuminate, striate, fringed scales, — Annual, diffuse 

 herbs ; leaves opposite, triplinerved ; heads peduncled, 

 y 134. G. parviflora, Cav. Glabrescent or with scattered, hispidulous down ; leaves ' 

 ovate or ovate-lanceolate, pointed, serrate or snbentire ; palese 3(-2)-fid. — Ray whitish. — 

 Hab. Jamaica I, M'Nab, March, Wils., a weed. Port Royal mountains, at 4000' alt. ; 

 [Mexico to Chili ; naturalized in the United States and northern liurope]. 



Subseries 5. Anthemideee. — IHsk-flowers mostly hermaphrodite, Achenium naked or 

 crowned. — Leaves alternate. 



45, EGLETES, Less, 



Head radiate ; ray-flowers ? . Involucre imbricate. Receptacle convex, naked. CoroUce 



2 c 



