62 NORTH AMERICAN FLORA [Volume 34 



except the midrib, oblong, or oblong-spatulate, thin, the outermost linear, shorter, 

 and herbaceous. Rays wanting. Disk-flowers many, all hermaphrodite and actinomorphic, 

 perfect; corollas white or flesh-colored; tube slender, longer than the funnelform throat; 

 lobes oblong, longer than the throat. Style-branches filiform, hispidulous their whole length. 

 Achenes elongate-obpyramidal, attenuate at the base, slightly 4-angled, striate, pubescent. 

 Pappus of 10-12 elongate narrowly linear-lanceolate squamellae, with a strong midrib. 

 Type species, Polypteris integrifolia Nutt. 



1. Polypteris integrifolia Nutt. Gen. 2 : 139. 1818. 



Hymenopappus integrifolius Spreng, Syn. 3: 449. 1826. 

 Paleolaria fasligiata Less. Syn. Comp. 156. 1832. 

 Palafoxia fastigiata DC. Prodr. 5: 125. 1836. 

 Lomaxeta verrucosa Raf. New Fl. 4: 72. 1838. 

 Palafoxia integrifolia T. & G. Fl. N. Am. 2: 369. 1842. 



A stout perennial herb; stem 5-15 dm. high, corymbosely branched above; sparingly 



hispidulous; leaves short-petioled, linear to narrowly lanceolate, 3-7 cm. long, obtuse, entire, 



sparingly hispidulous-scabrous ; peduncles somewhat enlarged under the heads; involucre 



about 12 mm. high, 12-15 mm. broad; inner bracts white or pinkish, obtuse, glabrous, the 



outer ones green, hispidulous; corolla- tube 6-7 mm. long; lobes linear, 4 mm. long; achenes 



6 mm. long, 1 mm. thick, hirsutulous; squamellae linear-subulate, longer than the corolla-tube. 



Type locality : Banks of the Altamaha. 

 Distribution: Pinelands, Georgia and Florida. 



43. PALAFOXIA Lag. Gen. & Sp. Nov. 26. 1816. 



Paleolaria Cass. Bull. Soc. Philom. (1816: 198; hyponym. 1816) 1818: 47. 1818. 



Herbaceous or frutescent perennials or annuals. Leaves alternate or the lower opposite, 

 entire. Heads corymbose, discoid. Involucre oblong to campanula te; bracts narrow, sub- 

 equal, mainly in a single series, becoming somewhat concave, inclined to embrace the outer 

 achenes, herbaceous to the tip. Receptacle flat, small. Ray-flowers wanting. Disk-flowers 

 hermaphrodite and fertile ; corollas flesh-colored or whitish, both tube and narrow lobes much 

 shorter than the cylindraceous throat. Style-branches elongate, filiform, obtuse, puberulent 

 their whole length. Achenes nearly linear, tapering somewhat downward, 4-angled, merely 

 pubescent. Pappus of 4-8 usually unequal squamellae with strong midribs, those of the 

 marginal achenes often much shorter. 



Type species, Palafoxia linearis Lag. 



Leaf -blades linear or linear-lanceolate ; pappus-squamellae of the inner achenes 

 lanceolate, longer than the corolla-tube. 

 Leaves attenuate; plant annual, if perennial not shrubby, erect. 1. P. linearis. 



Leaves obtuse; plant perennial and shrubby below, decumbent. 2. P. leucophylla. 



Leaf -blades oblong or elliptic; pappus-squamellae oblong, shorter than the corolla- 

 tube. 3. P. Feayi. 



1. Palafoxia linearis Lag. Gen. & Sp. Nov. 26. 1816. 



Ageratum lineare Cav. Ic. 3: 3. 1795. 



Paleolaria carnea Cass. Bull. Soc. Philom. 1818: 47. 1818. 



Stevia linearis Willd. Sp. PI. 3: 1774. 1804. 



Slevia lavandulaefolia Willd.; DC. Prodr. 5: 125, as synonym. 1836. 



A branched annual or perhaps perennial; stem 3-5 dm. high, hispid and glandular espe- 

 cially above; leaves very narrowly lance-linear, attenuate, 5-10 cm. long, 2-6 mm. wide, 

 canescent, strigose-hirsute or hispid; peduncles densely glandular; involucre narrowly tur- 

 binate-campanulate, 12-15 mm. high, 7-12 mm. broad; bracts linear, densely hispid and 

 glandular; flowers 10-30; tube of the corollas 3-5 mm. long; throat 3 mm. long; lobes oblong- 

 linear, 1.5 mm. long; achenes 10-12 mm. long, 1 mm. thick, pubescent; squamellae 4, usually 

 6-7 mm. long, with strong excurrent midrib and scarious margins or those of the marginal 

 achenes much smaller, not scarious and sometimes minute. 



Type locality: Mexico. 



Distribution: Nevada, southern Utah (?), and southern California, to Lower California and 

 Coahuila. 



Illustrations: Cav. Ic. pi. 205; Bot. Mag. pi. 2 J 32. 



