378 SYNANTHEREJJ. 



Sect. 2. Eupkctis. — Pappus l-serial, of distinct scales, usually produced into scabrous 



awns. 



* Heads pedicellate, single. 



125. P. Swartziana, Less. Annual, glabrous, slender, trichotomously branched above ; 

 leaves oblong 'linear, mucronulate, dotted beneath, scabrous on the margin : bristles few at 

 their base (or none) ; heads pedicellate : involucral scales 8-5, oblong-linear, blunt, convo- 

 lute ; ray 8-5-, disk 5-flowered ; achenia hispidulous : scales minute, most of them devoid 

 of awns. — Plum. Ed. Burnt, t. 86. /. 1 : rough. — P. ciliaris, Sw. {non L.). — 1'-2' high ; 

 leaves 2'" broad. — Hab. Jamaica !, Macf., in dry soil ; [Haiti ; Panama !]. 



126. P. linifolia, Less, (exclus. syn.). Annual, slender, branched at the base: inter- 

 nodes puberulous, hairs in 2-4 rows ; leaves linear, mucronulate, dotted beneath, scabrous on 

 the margin and midrib beneath, with long bristles below the middle ; pedicels about as long 

 as the heads; involucral scales 5 (-6), oblong-linear, bluntish, convolute ; ray 5-, disk 10-5 

 (-few) -flowered ; achenia pubescent, of the ray 2-, of the disk 4-5-awued : awns subequal, 

 dilated at the base. into a lanceolate scale. — Spithameous -1J' high; leaves 1 '"-$'" broad. — 

 Hab. Jamaica!, Macf.; [Key West to S. Thomas]. 



m ** Heads subsessile, or longer than their pedicel. 



127. P. ciliaris, L. {non Less.). Annual, branched from the base ; stems slender, often 

 compressed, puberulous, hairs in 2 rows ; leaves obversely lanceolate-linear, rouuded-acute, 

 usually tapering below the middle, dotted beneath, scabrous on the margin, with long bristles 

 below the middle ; heads single-ternate, subsessile, or longer than their pedicel ; involucral 

 scales 5, oblong, mucronulate, keeled below; ray 5-, disk 5-8-flowered ; achenia hispidulous, 

 of the ray 2(-3)-, of the disk 5-4-awned : awns subequal, lanceolate below the middle. — 

 P. anceps, Less. P. costata, Ser. Though Plumier's rough figure, quoted by Linnaeus, is to 

 be excluded, from his description and the Jamaica origin, this is evidently his P. ciliaris. — 

 Spithameous-1' high ; leaves 1" long, or shorter, 2-1'" broad. — Hab. Jamaica !, Macf., 

 MNab, Pd., S. Andrews, in the Liguana plains ; [Cuba]. 



128. P. prostrata, Cav. Annual, procumbent, branched from the base : internodes pu- 

 berulous, hairs in 2 rows ; leaves obversely lanceolate, mucronulate or blunt, tapering towards 

 the base, dotted with scattered glands, scabrous on the margin, with long bristles near the 

 base ; heads single, subsessile, or much longer than their short pedicel ; involucral scales 5, 

 oblong, thickened on the back ; ray 5-, disk 5-6-flowered ; achenia hispidulous, of the disk 

 with 5-4, of the ray with 2, unilateral scales : scales lanceolate, shortly awned: the awns 

 shorter than the scale, subequal. — Cav. Lc. t. 324. Plum. Ed. Burm. t. 99. f. 2: rough. 

 3"-8" long; leaves 10"'-6"' (-15'") long, 2"'-l'" broad.--HAB. Antigua!, Wullschl.; 

 [Cuba ! ; Texas !, New Mexico !, Yucatan !, New Granada !, Brazil !]. 



129. P. hmnifusa, Sw. Annual, suffrutescent at the base, procumbent, branched 

 from the base ; leaves spathulate, rounded at the top, mucronulate, or usually quite blunt, 

 dotted with scattered glands, scabrous on the margin, with long bristles near the base ; 

 heads single, muck longer than their short pedicel, or subsessile ; involucral scales 5, oval- 

 oblong, blunt, keeled below ; ray 5-, disk 10 (-20) -flowered ; achenia hairy in rows, of the 

 ray 5-3-, of the disk 14-6-awned : awns subequal, linear at the base. — P. prostrata, Sieb. 

 P. Sieberi, Less. P. serpyllifolia, Less. : a small-leaved form. — 3"-6" long ; leaves 6"-3" 

 long, 2'"-!'" broad. — Hab. St. Kitts (Sw.), Antigua !, Wullschl., Dominica !, Lmr., in savan- 

 nahs, S. Vincent !, Guild. ; [Portorico ! to French islands !], 



130. P. Plumieri, Or. (n. sp.). Suffrutescent at the base ; stems ascending, stout, 

 obtusely 4-gonal, glabrous, shortly-branched above ; leaves linear, acuminate, dotted be- 

 neath, scabrous on the margin, with long bristles near the base ; heads narrow, single-gemi- 

 nate, much longer than their short pedicel ; involucral scales 5, linear, acuminate, convolute ; 

 ray 5-, disk 5-few-flowered ; achenia glabrescent, of the ray 3-4-, of the disk 8-awued : 

 awns subequal, setaceous at the slight y dilated base. — Plum. Ed. Burm. t. 151. f. 2: 

 rough. — Root apparently perennial ; stems several, spithameous-1' high ; leaves 14'"-9"' 

 long, 1'" broad, channelled; heads 4'" long; awns scabrous, long, in the ray often one 

 shorter. — Hab. Jamaica !, M'Nab, S. Marys. 



