SYNANTHERE^J. 365 



bearing reduced, distant leaves; lowest leaves rosular, spathulate, few-serrate or entire, the 

 cauliue minute, lanceolate-linear ; involucral scales linear, pointed, glabrescent, 2-3-serial, 

 exterior short; ray-flowers filiform, sub- 1 -serial, shortly exserted ; achenium pubescent: 

 pappus pale-rusty. — Sw. Obs. t. 8./. 2. — E. cuneifolius, DC: the entire leaved form. — 

 6"-18" high; heads 4"' diam. : ray whitish.— Hab. Jamaica!, Maef., Pd., M'Nab, 

 Wullfichl., in pastures and fields; [Cuba!, Haiti, Portorico]. 



64. E. rivularis, Sw. Pubescent ; stem leafy, ascending at the base ; leaves spathulate- 

 lanceolate (or spathulate), broad at the base, pinnatifid above the middle, or with a few 

 large serratures, rarely subentire, the lowest rosular ; heads corymbose ; involucral scales 

 linear, bluntish at the acuminate top, 2-3-serial, exterior shorter; ray-flowers filiform, sub- 

 1-serial, shortly exserted; achenium pubescent: pappus pale-rusty. — SI. t. 152. f. 3. — 

 E. jamaicensis, L. — Heads of the preceding — Hab. Jamaica !, Pd., alone river-banks : 

 [Cuba!]. 



65. E. strictus, DC Nearly glabrous ; stem leafy, slender; leaves scattered, scabrous 

 on the margin, pointed or acuminate, inferior spathulate-lanceolate, remotely serrulate, 

 superior lanceolate or linear, entire ; heads corymbose ; involucral scales linear, spreading, 

 sharply acuminate, glabrous, 2-3-serial, exterior shorter; ray-flowers rounded at the top, 

 several-serial, very shortly exserted : disk few-flowered ; achenium glabrescent i pappus 

 tawny, subequal. — 8"-2' high, devoid of a basilar rosule ; involucre 2'" long : ray-flowers 

 20-25, less than 1'" longer than the involucre, revolute at the top. — Hab. Jamaica !, M'Nab ; 

 [Mexico!]. 



66. E. spathulatus, V. Pilose ; stem leafy, erect ; leaves scattered, inferior oval or 

 spathulate, contracted into a long linear base, coarsely few-serrate, superior lanceolate, sub- 

 entire; heads corymbose; involucral scales linear, sharply acuminate, glabrescent, sub- 

 1-serial, few exterior short; ray -flowers filiform, many-serial, included: disk few-flowered ; 

 achenium pubescent : pappus pale-rusty. — 1'-3' high ; heads 4'" diam. : ray-flowers very 

 numerous, as long as the pappus. — Hab. Antigua!, Wullschl.; [Virgin Islands]. 



** Heads in a racemiform panicle. 



67. E. bonariensis, L. Pilose ; stem leafy, erect ; leaves lanceolate, inferior few- 

 serrate, often broader, or pinnatifid-sinuate, superior entire ; panicle racemiform : inferior 

 branches longer; involucral scales linear, acuminate, sub-1-serial, exterior shorter; ray- 

 flowers filiform, many-serial, included: disk-flowers 5-dentate; achenium with scattered 

 hairs, or glabrescent ; pappus tawny. — Dill. Elth. 2. /. 334 ; the sinuate-leaved form. — 

 Conyza ambigua caribsea, Less. C. albida, W., Less., {Linnaa, 6. p. 136). — 1'-3' high; 

 leaves 2"'-6'" broad; heads 4'" diam., white. — Hab. Jamaica!, Macfi, Dist., Pd., March, 

 a weed, in pastures ; S. Kitts !, Els., Antigua I, Wullschl., S. Vincent !, Guild. ; Trinidad !, 

 Cr., in canefields; [Central America to Buenos Ay res]. 



68. E. canadensis, L. Hispidulous or glabrescent ; stem leafy, erect ; leaves lan- 

 ceolate-linear, ciliate, subentire; panicle racemiform; involucral scales linear, bluntish, 

 3-serial, exterior shorter ; ray-flowers linear, many-serial, included : disk -flowers 4-dentate ; 

 achenium glabrescent; pappus straw-coloured. — Rchb. Ic. Germ. t. 917.fi 1. — 1—3' high; 

 leaves l"'-2'" broad ; heads 3'" diam., whitish. — Hab. Jamaica !, Macfi, Pd., Wils., a 

 common weed; S. Kitts!, Els., Antigua!, Wullschl., Dominica!, Imr., S. Vincent!, Guild., 

 Trinidad; [Canada to Brazil; Northern Europe to the Cape and Persia!]. 



Sect 2. Stenactis, Cass. — Achenium 2-nerved: pappus 2-serial: exterior series minute. 



69. E. apnrensis, Gr. Pilose, suffrutescent ; stem erect, fastigiate-branched above; 

 inferior leaves obovate or spathulate, coarsely serrate, or pinnatifid at the base, superior 

 lanceolate, few-serrate or entire; corymbs terminal on the branches, in a spreading, fiasti- 

 giate panicle; involucral scales linear, sharply acuminate, glabrescent, 2-serial, exterior 

 shorter; ray-flowers filiform, many-serial, included; disk few-flowered, hermaphrodite; 

 achenium puberulous, glabrescent : pappus pale-rusty, exterior setaceous. — Conyza, Kth. — 

 ti i_i: ~.l n.,., 7i~sm a n C liirafa. Kth.. and C lurirln Sphmi/U whinh howpver 



achenium puberulous, glabrescent : pappus pale-rusty, exterior setaceous. — Conyza, &tn. — 

 Resembling several Conyza, e. g. C. lyrata, Kth., and C. lurida, Schmidt, which however 

 are true Conyza, having tubular-filiform, exterior flowers, which in our species are ligulate. 

 3'-4' high ; inferior leaves 2i" long, 11" broad ; heads 4'" diam.— Hab. S. Vincent !, C 

 Trinidad I, Sch., Cr. ; [Mexico ! to Venezuela]. 



2 b 2 



