FERNALD. GENUS PECTIS. 67 



the middle : heads solitary or in 2's or 3's, sessile or subsessile in the 

 axils of the leaves or on short leafy branches : involucre 5 to 6 mm. high, 

 lO-lo-flowered ; the 5 linear-oblong bracts acutish, strongly conduplicate, 

 keeled toward the bases, ciliate, bearing a few large glands especially 

 toward the tips: rays narrow, 2 or 3 mm. long: pales subequal, the 

 longest 1^ or 2 mm. long, lance-attenuate with a serrulate tip or with a 

 lanceolate or lance-ovate fimbriate base tapering gradually to a serrulate 

 awn ; in the disk-pappus 1 or 2 shorter intermediate pales often present : 

 akenes sparingly appressed-pubescent, 3 mm. long. — Syst. Nat. ed. 10, 

 1221, Amcen. Acad. v. 407, & Spec. ed. 2, 1250. P. anceps, Less. 

 Linntea, vi. 715, and P. costata, Ser. & Merc, in DC. Prodr. v. 100 fide 

 Grisebach. P. ciUata, Steud. Nom. ed. 2, i. 360, in syn. fide Hook. f. 

 & Jack. Ind. Kew. ii. 443. Chthonia glaucescens, Cass, in Diet. Sci. Nat. 

 ix. 173, and C. ciliaris, Cass. 1. c. xxvii. 206 fide Steud. 1. c. (reduced 

 to Pedis ciliata, doubtless a misprint for P. ciliaris) and fide Hook. f. & 

 Jack. 1. c. i. 532. — Florida, Charlotte Harbor (Blodgett), Miami (Gar- 

 ber), Lastero Bay (Garber, no. 14), Tampa (Nash. no. 2479), Keys of 

 Caximbas^c^e Chapman. Also in the West Indies. 



P. Lessingii. More diffusely branched and more leafy than the 

 last : leaves similar, but narrower, mucronulate, with 2 distinct rows of 

 marginal glands : heads solitary on sjDaringly bracteate filiform peduncles 

 2 or 3 cm. long : bracts of involucre less conduplicate than in the last, the 

 glands fewer or wanting : pappus more abruptly awned, or sometimes 

 awnless : akenes spreading-pubescent or glabrate. — P. linifolia, Less. 

 Linnaea, vi. 709 (excl. syn.), not L. ; DC. 1. c. 99 (excl. syn.) ; Griseb. 

 Fl. Brit. W. L 378; Gray, Syn. Fl. i. pt. 2, 360. — Florida, Key 

 West (Blodgett, Chapman), Palm Cape (Chapman), Miami (Garber), 

 Cape Sable (Garber, no. 22, Simpson, no. 170), between Everglades 

 and Biscayne Bay (Curtis, no. 1162). Also in the West Indies. A 

 single anomalous specimen from Key West (Blodgett) has some of the 

 leaves mucronulate and the solitary head subsessile, thus suggesting the 

 preceding species. 



++ ++ Depressed annuals : heads sessile or subsessile, with inconspicuous rays : 

 pales subequal, lanoe- or linear-attenuate, sometimes awn-tipped. 



= Pappus simply of attenuate pales, in the disk 5 or 6, in the ray 2 or 3. 



P. prostrata, Cav. Stems prostrate, forming mats sometimes 4 dm. 

 across (rarely simple and ascending), smooth or puberulent in lines : 

 leaves oblanceolate or spatulate-linear, blunt or mucronate, Z^ cm. or less 

 in length, 2 to 5 mm. broad, with many fine punctate dots on the pale 



