70 PROCEEDINGS OF THE AMERICAN ACADEMY, 



acute, about 12 mm. long, 2 to 4 mm. wide, with 2 rows of large glands; 

 margins scabrous, naked or with 1 or 2 pairs of basal setEe : heads about 

 5 or 6 mm. high, 10-12-flowered, on elongated peduncles: involucre 

 cylindric, 5-8-bracteate, the conduplicate bracts obtuse and with scarious 

 margins : pappus of short equal pales, or with one of them longer, lance- 

 attenuate and serrulate. — Linnjea, vi. 711 ; DC. Prodr. v. 99 (Plum. 

 PI. Amer. ed. Burm. t. 86, f. 1). P. patula^ L. f. in herb. Jide DC. 

 1. c. in syn. P. punctata, Swartz in herb. L'Her.^c/e DC. 1. c. in syn. 

 P. ciliaris, Swartz, Obs. 307, not L. — Panama, hills around Loseria 

 (S. Hayes, no. 690 Jide Hemsley) ; also in Jamaica and Hayti. Plant 

 unknown to us, the description drawn from Lessing and De Candolle. 



* * Pales many (10 to 20) at least in the disk. 

 H— Stems more or less spreading or decumbent : leaves broadly linear. 



P. arenaria, Benth. A prostrate perennial, the smooth, thick stems 

 creeping extensively and forming mats, sending up many short branches 

 with rosettes of leaves : leaves linear or spatulate-linear, 1 to 4 cm. long, 

 3 to 6 mm. wide, rounded at the tips and mucronate, pale beneath, ob- 

 scurely but closely pellucid-punctate, with a single marginal row of dark 

 glands ; margins revolute, entire, with 3 to 7 pairs of basal setse : pe- 

 duncles erect or curving, 1 to 7 cm. long, compressed, angulate and almost 

 winged above, with 2 to 7 prominent lance-subulate bracts 6 mm. long : 

 involucre broadly cylindrical or campanulate, 8 to 12 mm. high, 5 to 8 

 mm. broad, 20-90-flowered ; bracts 5 to 8, flat, imbricate, from lanceo- 

 late to ovate-oblong, 2 to 6 mm. wide, obtuse or acutish, many striate, 

 slightly keeled below the middle and tapering to conspicuously thickened 

 bases, sometimes sparingly ciliate : rays lanceolate to ovate-oblong, 6 or 

 7 mm. long : pappus sordid; in the disk of 10 to 20 linear-subulate very 

 unequal setiferous pales, 4 to 6 of them longer (4 mm. long) and more 

 dilated below than the others ; in the ray shorter and usually fewer pales : 

 akenes compressed, 6 or 7 mm. long, smooth and glossy or sparingly 

 short-setose. — Bot. Voy. Sulph. 110. The synonymy of this species is 

 very confused, and, from the descriptions, it is difficult to make it out. 

 Lorentea multijlosculosa, DC. was described in the Prodromus (v. 102) 

 from Peru, and from the description seems to be a form of Pedis canes- 

 cens, HBK. The name, however, was soon changed by Schultz Bipon- 

 tinus to Pedis rnidtijlosculosa (Schz. Bip. in Seem. Bot. Voy. Herald, 

 309), but according to Bentham and Hooker f. (Gen. ii. 412) P. multi- 

 fiosculosa, Schz. Bip. in herb, is the same as P. arenaria, Benth. Since 

 then, however, Klatt (Leopoldina, xx. 92) has founded upon P. multifios- 



