82 PROCEEDINGS OF THE AMERICAN ACADEMY. 



and Santa Cruz (C. Wright, no. 1127), Apache Pass (Lemmon), Foot- 

 hills of Saota Rita Mts. (Pringle), Fort Huachuca (Palmer, 1890, no. 

 425); SoNORA, Santa Cruz and Babocomori (Thurber, no. 996), Sonoyta 

 valley (Rothrock, no. 635) ; Chihuahua, San Diego (Hartraan, no. 609). 

 P, canescens, HBK. Stems glabrous or puberulous or more or 

 less canescent-hirtellous, from a few centimeters to 3 dm. in length : 

 leaves rather rigid, linear or linear-oblong, acute, mucronate, 1 to 2^ cm. 

 long, 1 to 4 mm. wide, minutely punctate, entire or piunatifid-dentate, 

 with 2 to 10 pairs of sette : peduncles terminal, slender, 1 dm. or less in 

 length, 4— 10-bracteate : involucre 6 to 8 mm. high, about 40-tlowered ; 

 the 5 to 9 lanceolate to spatulate-obovate smooth plane bracts blunt or 

 rounded at the ciliate tips, usually glandless and prominently keeled 

 toward the bases : rays lance-obloug, yellow, 6 or 8 mm. long : disk- 

 pappus 20 to 30 unequal rufescent mostly capillary setse, a few of the 

 longest somewhat stouter, 6 or 8 mm. long ; ray-pappus as in the disk or 

 of fewer setse (latisquama) , or reduced to a few subulate squamelhie 

 (canescens), or auriculiform {auricularis), or entirely wanting (saturei- 

 oides) : akenes 6 mm. long, spreading-hirsute. — Nov. Gen. & Spec. iv. 

 263, t. 393, Gray, Proc. Am. Acad. xix. 47. P. longipes, Hemsley, 

 Biol. Centr.-Am. Bot. ii. 226 (as to Berlandier plant), not Gray. P. 

 multijlosculosa, Hemsl. 1. c. not Schz. Bip. Inula Saturejaoides, Mill. 

 Diet. ed. 8 ; /. satiirejoides, Willd. Sp. PI. iii. 2104 ; /. Satureice, 

 Spreng. Syst. iii. 520. Aster Saturejce, Banks in Reliq. Houst. 8, t. 19. 

 Lorentea. saturejo'ides. Less. Linntea, v. 135 & vi. 718 ; DC. Prodr. v. 102 

 (satureioides) . L. canescens, Less. 1. c. vi. 718; DC. 1. c. L. auricu- 

 lar is & var. Acapulcensis, DC. 1. c. Stamniarium hyssopifolium, Willd. 

 in Less. Linna?a, v. 135, in syn. Lorentea multijlosculosa, DC. (Prodr. 

 V 102) is probably referable here. It is not, according to Bentham and 

 Hooker f., or Klatt, the Pectis midiiflosculosa, Schz. Bip. Csee note 

 under P. arenaria) ; and from De Candolle's description and note it 

 seems very near if not quite P. canescens. A drawing, kindly furnished 

 by Mr. Thiselton-Dyer, of Qilrsted's Guanacaste plant (see Benth. in 

 QErsted, Vidensk. Medd. 1852, 70) shows that plant to be a form of 

 P. canescens (latisquama). — Dry ground, mostly in the mountains. Cen- 

 tral Mexico to Costa Rica. San Luis Potosi, near Sta. Maria (Schaff- 

 ner, no. 370), between San Luis Potosi and Tampico (Palmer, 1878-79, 

 no. 1097) ; Nuevo Leon (Berlandier, no. 3159) ; Vera Cruz, near 

 Vera Cruz (Houston fide Banks, 1. c), Wartenberg, near Tantoyuca 

 (Ervendberg, no. 63) ; Puebla, Tehuacan (Galeotti fide Hemsl.) ; 

 Mexico, Valley of Mexico (SchafFner, no. 85), near Santa Fe (Schiede 



