STANDLEY TREES AND SHRUBS OF MEXICO 1431 



4a. Hofmeisteria fasciculata zanti A. Grav in Brewer & Wats. Bot. Calif. 

 1: 299. 1876. 



Hofmeisteria fasciculata grayi T. S. Brandeg. Zoe 5: 160. 1903. 



Southern Baja California; type from Cape San Lucas. 



Similar, but leaves merely 3-lobed halfway to middle, the lobes broad, sparsely 

 repand-dentate. 



4b. Hofmeisteria fasciculata pubescens (S. Wats.) Robinson, Proc. Amer. 

 Acad. 47: 192. 1911. 



Hofmeisteria pubescens S. Wats. Proc. Amer. Acad. 24: 54. 1889. 



Baja California; type from Muleje. 



Densely glandular-pubescent, usually taller than the type; leaves often more 

 finely divided than in the typical form. 



14. FLEISCHMANNIA Schultz Bip. Flora 33: 417. 1850. 

 Suffrutescent or herbaceous; leaves opposite or alternate, dentate to biter- 

 nately parted; heads (in the following species) solitary on long peduncles, the 

 involucre many-seriate, strongly graduate, the phyllaries dry, acuminate, striate; 

 receptacle naked; achenes linear, 5-angled; pappus of 5 to 8 bristles, with minute 

 setulose squamellae between them, or the latter united into a low crown or 

 obsolete. 



Stem densely glandular-pubescent 1. F. schaf f neri. 



Stem glabrate below, sparsely glandular-pilose above 2. F. urenifolia. 



1. Fleischmannia schaf f neri A. Gray, Proc. Amer. Acad. 15: 101. 1879. 

 San Luis Potosi and Jalisco; type from San Francisco, San Luis Potosf. 

 Suffrutescent, about 20 cm. high; leaves chiefly alternate, the blades triangular 



in outline, about 1 cm. long and wide, once or twice ternately parted into spatu- 

 late-linear, sparsely dentate lobes 3 mm. wide or less; flowers whitish or purplish- 

 tinged; pappus of 5 or 6 bristles and a low denticulate crown. 



2. Fleischmannia urenifolia (Hook. & Arn.) Benth. & Hook.; Hemsl. Biol. 



Centr. Amer. Bot. 2: 91.1881, as F. urenaefolia. 



Phania ? urenifolia Hook. & Arn. Bot. Beechey Voy. 297. 1840. 



Fleischmannia langlassei Robinson, Proc. Amer. Acad. 41: 273. 1905. 



Tepic and Michoac^n or Guerrero; type from Tepic. 



Leaves alternate, the blades trifid or pinnately trisect with stalked trifid ter- 

 minal lobe, the segments obtuse; phyllaries linear-acuminate, except for a few 

 ovate outer ones. " Clavellilo." 



15. PIPTOTHRIX A. Gray, Proc. Amer. Acad. 21: 383. 1886. 

 Suffrutescent (or herbaceous?), slender, branched; leaves opposite, ovate, peti- 

 olate or subsessile; heads small, in close small panicles; involucre about 2-seriate, 

 of mostly subequal, dryish or subherbaceous phyllaries; flowers white; achenes 

 5-angled; pappus a single series of capillary deciduous bristles. 



All the known species of the genus are included in this treatment. 

 Stem and branches glabrous. 



Petioles 1 to 3 cm. long; leaves triangular or deltoid-ovate, 3 to 7 cm. wide. 

 Petioles 1 to 1.5 cm. long; leaves deltoid-ovate, with 25 to 30 pairs of teeth, 

 the pubescence of the under leaf surface chief!}- incurved. 



1. P. goldmanii. 

 Petioles mostly 2 to 3 cm. long; leaves triangular-ovate, with 11 to 18 pairs 



of teeth, the pubescence of the under leaf surface spreading. 



2. P. aegiroides. 

 Petioles 1 to 4 mm. long; leaves ovate, 1.3 to 4 cm. wide. 



Petioles and leaves glabrous, glaucescent 3. P. jaliscensis. 



