346 OLEACEAE 



lected by Fremont. This California species is very similar to, and by some botanists considered the same as» 

 the Old World species Styrax officinalis L. April-May. 



Styrax californica var. fulvescens Eastw. Bot. Gaz. 41 : 286. 1906. {Styrax officinalis var. fulvescens 

 Munz & Jtn. Bull. Torrey Club 51: 297. 1924.) Pubescence usually abundant and more or less fulvescent 

 in the extreme forms on the leaves, twigs and calyces; on the intermediate forms mainly on the buds and on 

 the veins of the younger leaves. Canyons and mountain slopes. Upper Sonoran Zone; Santa Barbara County 

 to San Diego County, California. Locally distributed in the following mountain ranges: Santa Ynez, San. 

 Bernardino, Santa Ana, Palomar; also in the vicinity of Mesa Grand^. San Diego County, the known southern 

 limit. Type locality: Santa Ynez Mountains back of Santa Barbara. 



Family 119. OLEACEAE. 

 Olive Family. 



Trees, erect or scandent shrubs, or rarely herbs, glabrous or rarely pubescent. 

 Leaves opposite or rarely alternate or verticillate, simple or pinnate, entirely or den- 

 tate, deciduous or persistent, without stipules. Flowers in terminal or axillary- 

 panicles, cymes or fascicles, regular, perfect, polygamous or dioecious. Calyx free 

 from the ovary, rarely wanting, small, 4-lobed or rarely many-lobed. Corolla some- 

 times wanting, when present, sympetalous or choripetalous, 2-4-merous. Stamens 

 2 or rarely 4, hypogynous or inserted on the corolla-tube ; filaments short. Ovary 

 superior, 2-celled ; ovules few in each cell ; styles usually short or none. Fruit a 

 capsule, samara, berry or drupe. Seeds erect or pendulous ; endosperm present or 

 absent ; embryo straight. 



A family of about 25 genera and 300 species, of wide geographical distribution in tropical and temperate- 

 regions. 



Fruit a samara; leaves pinnate, but the leaflets often reduced to 1 in F. anomala; trees. 



1. Fraxinus. 

 Fruit not a samara; leaves simple and entire. 



Corolla none; fruit a drupe; leaves all opposite; arborescent shrub. 2. Forestiera. 



Corolla present, yellow; fruit a 2-parted capsule; upper leaves alternate; low shrub or sufFrutescent herbs. 



3. Menodora. 



1. FRAxINUS L. Sp. PI. 1057. 1753. 



Trees or arborescent shrubs, with deciduous, opposite, odd-pinnate leaves, the leaflets 

 often reduced to 1 in F. anomala. Flowers appearing with or before the leaves from the 

 axils of the leaf-scars on last season twigs, fasciculate or racemose-fasciculate, small, 

 dioecious or polygamous. Calyx 4-lobed or irregularly lobed, entire or sometimes want- 

 ing. Petals commonly wanting, rarely 2 or 4, separate or united in pairs at base. 

 Stamens 2, rarely 3 or 4, hypogynous, or inserted on the base of the petals. Ovules 2 in 

 each ovary-cell, pendulous ; stigma 2-lobed. Fruit a samara, winged all around or only 

 at the apex; seed usually 1, oblong. [The ancient Latin name of the ash.] 



A genus of about 40 species, inhabiting the temperate regions of North America, Europe and Asia. Type 

 species, Fraxinus excelsior L. 



Petals none; flowers dioecious. 



Leaflets 5 or 7; body of the samara subterete, the wing terminal or extending down the side of the body 

 as a narrow margin. 

 Wing of the samara extending down the side of the body for about one- fourth to one-half its length; 



lateral leaflets sessile or subsessile. 1. F. latifolia. 



Wing of the samara terminal, extending down the side of the body less than one-fourth its length 

 as a very narrow margin; lateral leaflets petiolulate. 2. F. veliitina. 



Leaflets only 1 or rarely 3 ; body of the samara strongly flattened and broadly wing-margined to the base. 



3. F. anomala. 



Petals 2; flowers perfect; body of the samara strongly flattened, broadly wing-margined to the base. 



4. F. dipetala. 



1. Fraxinus latifolia Benth. Oregon Ash. Fig. 3778. 



Fraxinus latifolia Benth. Bot. Sulph. 33. 1844. 



Fraximis oregona Nutt. N. Amer. Sylva 3: 59. pi. 99. 1849. 



Fraxinus americana var. oregona Wesmael. Bull. Soc. Belg. 3P: 110. 1892. 



Fraxinus oregona var. latifolia Lingelsh. Engl. Bot. Jahrb. 40: 220. 1907. 



Tree 10-25 m. high with a trunk often 1-1.25 m. in diameter, young branches usually gray- 

 ish-tomentose, stout. Leaves 4-7-foIiolate, 18-30 cm. long; leaflets tomentose beneath, sometimes 

 very thinly so, glabrous or thinly pubescent above, entire, wavy or irregularly crenate-serrate, 

 the terminal one 6-10 cm. long, petiolulate, lanceolate to oblanceolate and acute or acuminate, 

 varying to ovate or obovate and rounded at apex, rounded at base, lateral ones smaller and 

 usually obtuse at base, sessile or subsessile ; samaras in loose panicles, the wing usually extend- 

 ing down the side of the body as a narrow margin to near the middle, 2.5-4.5 cm. long, 7-9 mm. 

 wide, rounded at apex. 



Streams and moist flats, mainly Humid and Arid Transition Zones; Kitsop and King Counties, western 

 Washington, south on the Pacific Slope to Santa Clara and Tulare Counties, California. The Sierra Nevada 



