FERNALD. — GENUS PECTIS. 85 



barely 1 cm. long, with the glandular dots irregularly scattered over the 

 lower surfaces, and with only 1 or 2 pairs of basal setse : peduncles 2 to 

 7 mm. long: involucre oblong, 10-12-flowered, 3 or 4 mm. high, of 5 

 linear-oblong more strongly costate glandular-dotted bracts : rays 3 or 

 4 mm. long: pappus of the ray-akenes three awns, the longest 1 mm. 

 long, of the disk-akenes a minute squamellose crown : akenes 3 mm. long, 

 sparingly pubescent with capitate hairs. — P. multiseta, Vasey & Rose 

 (misprinted muUisecta) , Contrib. U. S. Nat. Herb. i. 72, not Benth. — 

 Lower California, San Gregorio (Brandegee, 1889), common on sandy 

 mesa;^, La Paz (Palmer, 1890, no. 23). 



§ 5. Pectidium, Gray. Erect glabrous plants with the leaves entire, 

 naked or sparingly setiferous at base : rays white or whitish becoming 

 purple : pappus of rigid smooth awns with or without a few aristiform 

 palete and squamellte, or reduced to a crown of corneous squamellas, or 

 even obsolete. — PI. Wright, i. 83, & Proc. Am. Acad. xix. 48, in part. 

 Pectis, Cass, in Diet. Sci. Nat. xxxviii. 202. Pectidium, Less. Linnasa, 

 vi. 706. 



* Slender annuals with thin leaves sparingly setiferous at base (very rarely 

 naked) : rays 1 or 2 mm. long : pappus consisting only of 2 or 3 corneous 

 smooth (rarely a little denticulate) subulate divergent awns. — Pectis, Cass. 

 1. c. Peclidhim, Less. I. c. 



P. linifolia, L. Rather tall and slender, 3 to 9 dm. high, paniculately 

 branched : leaves plane or slightly revolute, linear or linear-lanceolate, 

 the largest 5 or 6 cm. long, 5 mm. wide, dark green above, glaucous be- 

 neath and covered with many small round glands, with larger elongated 

 ones along the margin : peduncles becoming 2 or 3 cm. long, with 1 or 

 2 minute bracts above the middle : involucre glabrous or minutely puberu- 

 lent, 5 or 6 mm. high, 6-9-flowered, of 4 or 5 narrow linear blunt bracts, 

 marked longitudinally with black glands and soon becoming involute: 

 awns 2 or 2^ mm. long: akenes minutely puberuleiit or glabrate, 4 mm. 

 long. — Syst. Nat. ed. 10, 1221 (Sloane, Hist. Jam. t. 149, f. 3) & 

 Amccn. Acad. v. 407 {Tagetes ? 2, Browne, Jam. 319) ; Ga^rtn. Fruct. 

 t. 171; Lam. 111. t. 684; Cass. I.e. P. punctata., Jacq. Enum. PI. 

 Carib. 28 & Stirp. Amer. 216, t. 128; L. Spec. ed. 2, 1250; Swartz, 

 Obs. 308 ; Cass, in Diet. Sci. Nat. 1. c. ; Gray, Syn. Fl. i. pt. ii. 362. Pec- 

 tidium 'punctatum., Less. Linnrea, vi. 707 ; DC. Prodr. v. 98. — Yucatan 

 (Gaumer, no. 887); Lower California, Cape St. Lucas (Xantus, no. 45). 

 Common in the West Indies and reported from Venezuela and Galapagos. 



Var. marginalis. More slender than the type, ascending, not so 

 tall (the tallest about 4 dm. high) : leaves pale green with remote orange- 



