FLOWERING PLANTS AND FERNS OF ARIZONA 057 



1. Pastinaca sativa L., Sp. PL 262. 1753. 



Ramsey Canyon, Huachuca Mountains {Peebles et al. 3488). The 

 parsnip has escaped from gardens and established itself widely in North 

 America but has scarcely become naturalized in Arizona. 



28. HERACLEUM. Cow-parsnip 



Plant perennial, with fascicled fibrous roots, caulescent, tomentose ; 

 stem tall, stout; leaves ternately compound, the leaflets 3, large, ovate 

 to orbicular, sharply serrate and lobed, petiolulate; peduncles axillary 

 and terminal; umbels compound; involucre of narrow, entire, decidu- 

 ous bracts; bractlets of the involucel small, linear; calyx teeth obsolete; 

 corolla white, the petals obcordate, the marginal ones of the umbel 

 much larger; stylopodium thick, conic; fruit broadly obovate or ob- 

 cordate, 8 to 12 mm. long, strongly flattened dorsally, more or less 

 pubescent, the dorsal and intermediate ribs filiform, the lateral wings 

 broad, the oil tubes solitary in the intervals, visible on the dorsal 

 surface and extending from the apex to about the middle of the mericarp, 

 2 on the commissure, the seed face plane. 



1. Heracleum lanatum Michx., Fl. Bor. Amer. 1: 166. 1803. 



Pinaleno Mountains (Graham County), Santa Catalina Mountains 

 (Pima County), McClintock Canyon, Black Mesa (Apache or Navajo 

 County), 7,500 to 9,000 feet. Widely distributed in the United States 

 and Canada. 



A coarse plant, reported to be relished by livestock. The young 

 leaves and stems were eaten by the Indians. The root appears to be 

 somewhat stimulant and carminative and has been used in epilepsy. 

 It is reported that the Apache Indians used it medicinally. Contact 

 with the wet foliage is stated to cause dermatitis in susceptible persons. 



29. DAUCUS. Carrot 



Plant annual, caulescent, variously hispid; leaves 3- to 4-pinnati- 

 sect, the leaflets small, linear; peduncles terminal; umbels compound; 

 involucre foliaceous, equaling or exceeding the rays, pinnately de- 

 compound into short linear or lanceolate segments; bractlets of the 

 involucel linear, about equaling the pedicels; calyx teeth obsolete; 

 corolla white; stylopodium none; fruit oblong, 3 to 5 mm. long, some- 

 what flattened dorsally, the primary ribs slender, bristly, the secondary 

 ribs with a single row of prominent barbed bristles, the oil tubes 

 solitary in the intervals, 2 on the commissure, the seed face plane to 

 concave. 



1. Daucus pusillus Michx., Fl. Bor. Amer. 1: 164. 1803. 



Mohave County to Greenlee, Santa Cruz, Pima, and (doubtless) 

 Yuma Counties, 4,000 feet or lower, spring. South Carolina to Flor- 

 ida, west to Missouri, Arizona, Washington, California, and Mexico. 



This humble relative of the cultivated carrot (D. carota L.) is known 

 in California as rattlesnake-weed. It is reported that the Navajo 

 Indians ate the roots, both raw and cooked. 



92. CORNACEAE. Dogwood family 



Small trees or shrubs; leaves opposite, without stipules, the blades 

 entire; flowers perfect or dioecious, regular, small, the parts in 4's or 

 5's; ovary inferior. 



