320 RUBIACEiE. 



simple cymes or in clusters, rarely single .• the ultimate cyme-branches often S-Jtowered : 

 calyx usually bracteolate at the base. 



I formerly employed the name Pelesia in De Candolle's sense, but since Asa Gray has 

 proved that Bartling's East Indian Petesia belong to Timonius (as I find confirmed by 

 original specimens), it is perhaps more advisable to substitute for the remaining P. grandis, 

 Bartl., the later name Sommera, and to restore Petesia, P. Br., as a peculiar section of 

 Sonde let ia. 



Sect. 1. Petesia, P. Br. — Segments of the calyx-limb minute, dentiform, 5 (-4), much 

 shorter than the tube. —Inflorescence usually paniculate, axillary : flowers pedicellate. 



47. R. laurifolia, Sw. ! Leaves elliptical-oblong, pointed, glabrous ; stipules subulate- 

 deltoid, villous within ; cymes in axillary, hoary-pubescent, racemiform panicles ; calyx-teeth 

 deltoid ; corolla externally tomentose, subrotate : tube obconical, subventricose, as long as 

 the lobes, which are tomentose within down to the obsolete ring ; anthers ovoid-oblong, 

 semiexserted, as long as the filaments ; seeds surrounded by a broad wing. — Br. Jam. t. 2. 



f. 2.— R. laevigata, Ait. ? {non DC). Leaves 3"-5" long, \\"-2" broad : petiole 6"'-4"' 

 long ; corolla fragrant, brownish-yellow : tube 1'" long, twice as long as the minute calyx- 

 limb. In all the following species the anthers are included, oblong-linear, with very short 

 filaments. — Hab. Jamaica !, Sw., Pd., M'Nab, Al., March, in the mountains of S. Marys, 

 S. Anns, Manchester. 



48. R. racemosa, Sw. ! Leaves elliptical-oblong, pointed, glabrous ; stipules deltoid, 

 villous within; cymes in axillary, glabrous, racemiform, peduncled panicles; calyx-teeth 

 deltoid ; corolla externally strigose, salver-shaped : tube shortly clavate, twice as long as the 

 lobes, which are pubescent within down to the prominulous ring; anthers oblong-linear, in- 

 cluded, much longer than the short filaments ; seeds . . . . — Br. Jam. t. 2. f. 3. — Swartz 

 has taken the placentas for the seeds, and neglected to separate the contiguous, oblong-linear 

 stigma-lobes. 5' high ; leaves 3" long, 14"-2" broad : petiole 10"'-6"' long ; corolla- 

 tube 1£'" long, twice as long as the anthers. — Hab. Jamaica !, Sw., near Mammee river 

 (P. Br.). 



49. R. thyrsoidea, Sw. I Leaves ovate or elliptical, pointed, glabrous above, puberu- 

 lous with scattered minute down beneath : stipules deltoid-subulate, strigose within ; cymes 

 in axillary, hoary-pubescent, pyramidal panicles ; calyx-teeth deltoid ; corolla externally pu- 

 bescent, salver-shaped : tube clavate, thrice as long as the lobes, which are pubescent on both 

 sides ; anthers oblong-linear, included, much longer than the short filaments ; seeds mar- 

 gined, with a short appendage at each end. — 6' high ; leaves 6"-3" long, 3"-lV broad : 

 petiole 12"'-6'" long ; panicles usually much longer than the petiole; corolla rusty-yellow- 

 ish : tube 2i'" long. — Hab. Jamaica !, Sw., Al., March, on arid hills, S. Marys. 



50. R. tomentosa, Sw. Leaves lanceolate-elliptical or elliptical, pointed at both ends, 

 puberulous and at length glabrate above, hoary-pubescent beneath : stipules deltoid-subulate, 

 strigose ; cymes in axillary, hoary-pubescent, short panicles ; calyx-teeth deltoid ; corolla 

 externally pubescent, salver-shaped •. tube filiform, clavate at the top, 4 times as long asjhe 

 lobes, which are pubescent on both sides ; anthers oblong-linear, included, one-fourth as long 

 as the corolla-tube ; seeds margined, with a short appendage at each end. — Petesia stipularis, 

 L. ? (exclus. syn. P. Br.).— 3' high ; leaves J»-lf long, U"-i" broad: petiole 12"'-6"' 

 long, often not exceeded by the panicle ; corolla brownish : tube 2\"' long ; seeds co, as in 

 the other species. — Hab. Jamaica !, in rocky hills, S. Katherine, S. Andrews. 



51. R. txifoliata, Jacq. Leaves lanceolate-oblong, acuminate at both ends, glabrous 

 above, glabreicent or hispidulous on the midrib beneath, 3-2 in the whorl : veins prominu- 

 lous beneath : stipules deltoid-subulate, pubescent ; cymes in axillary, hoary-pubescent, ra- 

 cemiform, peduncled panicles ; calyx-teeth deltoid ; corolla externally pubescent, salver- 

 shaped : tube filiform, clavate above, thrice as long as the lobes, which are pubescent on 

 both sides ; anthers oblong -linear, included, one-third as long as the corolla-tube ; seeds sur- 

 rounded by a •mng.—Jacq. Amer. Pict. t. 62.— 12' high; leaves 3"-4" long, 10"'-14'" 

 broad : petiole 4"'-6'" long ; corolla reddish : tube 2'" long. — Hab. Jamaica !, Matf., S. 

 Katherine. 



52. R. polita, Gr. (n. sp.). Leaves opposite, elliptical-oblong, or lanceolate-oblong, 

 bluntish, tapering at the base, quite glabrous, polished on both tides : veins dshcat«, 



