472 APOCYNACE.E. Fraxinus. 



to small subulate Lmcts ; the lower oblong or obovate and short-petioled : calyx- 

 lobes f) or G (rarely with intermediate ones, making 8 to 10), about the length of 

 the tube of the almost rotate yellow corolla : divisions of tlie capsulu globose. — 

 J/, scubra, vur. (jlabrtsctiDi, (iray in Watson, Cat. PI. Wheeler, 15. 



SoiitliuiiHlorii liDitliMN of tlid Siiilti, lh\ Cooper, Jh; I'ulvier. Arizona, Dr. I'uhner, Or. Smarf, 

 Lieut. U'licdcr. Sitltillo, Mt\\i(:(), (//•<•//;/ ; on wlioso spoolinons Dr. Eiigeliiiiiiin iiuUcatcd llio 

 species. It proWiibly passes into M. scubra, Gray, of Arizona, New Mexico, und Colorado. Lobes 

 of the corolla 3 or 4 lines long, exceeding the tube. 



2. PRAXINUS, Tourn. Ash. 

 Flowers polygamous or dioecious. Calyx small and i-cleft, or merely toothed, or 

 obsolete. Petals of 4 or sometimes only '1 petals, either distinct or united at Ihuso. 

 Stamens 2, rarely 3 or 4, hypogynous : anthers proportionally large. Ovary 2-celled ; 

 a pair of anatropous ovules pendulous from near the summit of each cell. Fruit a 

 samara, winged from the summit, usually only 1-celled and 1-seeded. Embryo with 

 flat cotyledons, in fleshy albumen. — Trees ; with tough and straight-grained wood, 

 petioled and pinnate opposite leaves, and numerous small flowers in crowded pani- 

 cles, developed with ov before the leaves, from separate buds. 



A genus of about 20 spccues, of the norlliern temperate zone ; rei)resented in California by two 

 species ; one of llieni of the Ornus or potaliferous section. 



1. F. dipetala, Hook. &l Arn. Small tree, glabrous: leaflets 5 to 9, or rarely 

 3, oval or oblong, serrate, mostly petiululate, when old rather coriaceous, an inch or 

 two long : panicles effuse : calyx usually 4-toothed, sometimes almost entire : petals 

 only 2, obovate-oblong with a short claw, white, 2 lines long, equalling the linear 

 anthers : fruit narrowly spatulate-oblong, mostly retuse, an inch long, and the base 

 merely sharp-edged ; or in one form almost obovate, wing-margined to the base and 

 nuich shorter. — Bot. JJeechey, 362, t. 87; Torr. Bot. Mex. Bound, 167, var. (1) 

 trifoliolata. Chionanthus fraxmifolius, Kellogg, Proc. Cal. Acad. v. 18. 



Not uncommon through the western part of the State. 



2. F. Oregana, Nutt. A fine tree : leaves tomentose, or becoming naked when 

 old : leaflets 5 to 7, from oval to oblong-lanceolate, entire, sessile, 2 to 4 inches 

 long : male panicles dense, with oblong anthers ; fertile panicles ample : flowers all 

 with a minute calyx and no petals : fruit marginless at base, gradually margined 

 upwards and produced into an obhmceolato or si»atulate retuse wing, the whole 1 to 

 1^ inches long. — N. Am. Sylv. iii. f)'.), t. 99. F. pubesceas, var.. Hook. Fl. ii. 61. 

 F. grand'ifolia, Benth. Bot. Sulph. 33. 



In ravines and along streams, from the Sierra Nevada in Fresno Co., and from the vicinity of 

 San Francisco northward to Oregon, Avhere it is common and forms a large timber-tree. In foliage 

 it resembles the Black Ash, but the wood is light colored and much like that of the White Ash of 

 the Atlantic States, is used for the same purposes, and appears to be equally valuable, ft is known 

 as Oreyon Ash. 



Order LX. APOCYNACE^. 



Shrubs, trees, or (ours) herbs, with acrid milky juice, opposite entire leaves, 

 destitute of stipules, regular flowers with all the parts in five, except that there are 

 only 2 carpels, and these usually distinct as to the ovary, Avhile the styles or stig- 

 mas are united : stamens borne on the corolla alternate Avith its lobes, which are 

 convolute and sometimes also twisted in the bud : the anthers disposed to cohere 

 with the stigma : and the pollen of the ordinary powdery grains. Calyx free, or in 

 Apocynum adnate to the very base of the ovaries. Seeds anatropous or aniphitropous, 



