1604 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



Undershrub 10 to 25 cm. high, cinereous-puberulous, especially on the branches, 

 and more or less glandular; leaves chiefly opposite, on slender petioles 0.5 to 3 cm. 

 long, the blades deltoid-ovate, 1 to 4.5 cm. long, about as wide, acute, dentate- 

 serrate or sinuate-dentate; heads 1 to 3, radiate, 1.2 to 2 cm. wide, white or rosy- 

 tinged, on peduncles 2 to 5 cm. long; involucre 2-seriate, equal, 5 to 8 mm. high; 

 achenes 4-angled, about 3 mm. long; pappus of 4 slender awns 2.5 to 5 mm. 

 long, and 4 oblong squamellae 0.5 to 1 mm. long. 



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



Reference: Rydberg, N. Amer. Fl. 34: 62-63. 1914. 

 1. Palafoxia leucophylla A. Gray, Proc. Amer. Acad. 8: 291. 1873. 



Palafoxia arenaria T. S. Brandeg. Proc. Calif. Acad. II. 2: 178. 1889. 



Palafoxia linearis leucophylla I. M. Johnston, Proc. Calif. Acad. IV. 12: 1202. 

 1924. 



Baja California; type from Carmen Island. 



Suffrutescent, decumbent, up to 1 meter long, hispid and glandular; leaves 

 alternate, linear or elliptic-linear, 1.5 to 3.5 cm. long, 2 to 6 mm. wide, short- 

 petioled, obtuse, entire, canescent-strigose; heads few, discoid, turbinate, about 

 1.8 cm. high, flesh-colored; phyllaries 1-seriate, herbaceous; achenes linear- 

 oblanceolate, 4-angled, about 8 mm. long; pappus of 4 to 6 linear-oblong truncate 

 scarious paleae with strong midrib, 5 mm. long. 



95. ERIOPHYLLUM Lag. Gen. & Sp. Nov. 28. 1816. 



Reference: Rydberg, N. Amer. Fl. 34: 82-96. 1915. 

 1. Eriophyllum confertiflorum (DC.) A. Gray, Proc. Amer. Acad. 19: 25. 

 1883. 



Bahia confertiflora DC. Prodr. 5: 657. 1836. 



Bahia lenuifolia DC. Prodr. 5: 657. 1836. 



Bahia trifida Nutt. Trans. Amer. Phil. Soc. n. ser. 7: 374. 1841. 



Eriophyllum confertiflorum trifid>c7n A. Gray, Proc. Amer. Acad. 19: 25. 1883. 



Eriophyllum confertiflorum laxiflorum A. Gray, Proc. Amer. Acad. 19: 25. 1883. 



Eriophyllum tenuifolium Rydb. N. Amer. Fl. 34: 96. 1915. 



Eriophyllum crucigerum Rydb. N. Amer. Fl. 34: 96. 1915. 



Baja California and islands; Sonora. California and Arizona; type from 

 California. 



Frutescent or suffrutescent, up to 60 cm. high, densely white-tomentose on 

 stem, branches, and involucre; leaves opposite below, alternate above, 0.6 to 3 cm. 

 long, the blade usually deltoid-ovate in outline, pinnately 3 to several-lobcd, 

 usually green above, tomentose beneath, the segments usually linear and entire, 

 revolute; heads small, yellow, in small umbelliform cymes or cymose panicles, 

 subse.ssile or pedicellate (pedicels sometimes 2 cm. long) ; phyllaries about 5, firm, 

 about 4 mm. long; rays about 5; achenes pubescent and glandular to nearly gla- 

 brous, narrowly oblong or obovoid, about 2 mm. long; pappus about 0.8 mm. long, 

 of several obtuse or acutish, unequal, paleaceous squameUae. 



96. CHAENACTIS DC. Prodr. 5: 659. 1836. 



Reference: Rydberg, N. Amer. Fl. 34: 64-74. 1914. 

 1. Chaenactis parishii A. Gray, Proc. Amer. Acad. 20: 299. 1885. 



Northern Baja California. Southern California; tj'pe from southern border 

 of California. 



Suff"rutescent, decumbent and much branched at base, up to 50 cm. high, 

 white-tomentose, sometimes glabrescent above, stipitate-glandular above beneath 

 the tomentum, 'eafy below; leaves alternate, 2 to 5 cm. long, the blades oblong- 

 ovate, pinnatilobate, the lobes 3 to 6 pairs, linear, usually entire; heads solitary 



