SYNANTHERE.E. 379 



42. POROPHYLLUM, VailL 



Head discoid. Involucre 1 -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. 



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

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

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

 hispidulous. — Jacq. Amer. Picl. t. 195. — Kleinia, Sw. Cacalia Porophylluni, L. P. ellipti- 

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

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

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

 and Peru ! ; Galapagos !]. 



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

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



43. CALEA, L., R. Br. 



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

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

 slightly angular ; 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 yellow ; corolla-lobes veinless between 

 the marginal nerves. 



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

 entire, densely scabrous-pubescent, 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. t. 151./. 3. 

 — C. cordifolia, Sw. ! : agreeing with Linnaeus' 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"-l"long; heads 3 "'-4'" long, 

 15-20-nowered. — Hab. Jamaica!, Sw., Macf., Al., Wullschl., in mountain-thickets. 



133. O. 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-lanqeolate, in- 

 terior and palese 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. 



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

 ovate or ovate-lanceolate, pointed, serrate or subentire ; palea: 3(-2)-fid — Ray whitish.— 

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

 [Mexico to Chili ; naturalized in the United States aud northern Europe]. 



S W ' 5 Anthemidese. — Disk-flowers mostly hermaphrodite. Achenium naked or 

 nes ' crowned. — Leaves alternate. 



45. EGLETES, Leu. 

 Head radiate: ray-flowers ?. Involucre imbricate. Receptacle convex, naked. Corolla 



