PRIMROSE FAMILY 655 



below into petioles; scape slender, 1-2 dm. high, purplish above, glabrous, 3-12- 

 flowered; cah^x-tube about 2 mm. long; lobes lanceolate, 3 mm. long; corolla 

 hlac-purple, with yellowish throat, often with a vi-avy purple Une; lobes oblong, 

 obtuse or acutish; anthers purple, often with whitish margins, acutish; capsiile 

 oblong, about 8 mm. long. Saline flats: Sask. — X.D. — Utah — Ida. Submont. 

 —Mont. My-Jl. 



16. D. puberulentum HeUer. Leaves 3-8 cm. long; blades oblanceolate 

 or spatulate, glabrous, entire-margined, obtuse, contracted below into short 

 petioles; scape 1-2 dm. high, puberulent above; cal>"x-tube 2 mm. long; lobes 

 lanceolate, acute; corolla purplish, with the throat yellowish; lobes oblong, 8-10 

 mm. long; capsule about 8 mm. long. Wet places: Ida. Submont. Ap. 



17. D. Cusickii Greene. Leaves 3-7 cm. long, puberulent; blades oblance- 

 olate or oblong or rarely obovate, obtuse, rounded or acutish at the apex, con- 

 tracted below into winged petioles; scape 1-3 dm. high, puberulent; cal\-x-tube 

 2-3 mm. long; lobes lanceolate, acuminate; coroUa purple, with a yellow throat; 

 lobes oblong or eUiptic, acutish, about 1 cm. long; anthers 3-5 mm. long, acute; 

 capsiile cyUndric, about 8 mm. long. D. Meadia puherulum Xutt. Grassy 

 slopes: B.C. — Wash. — Mont.— Alta. Submont. Ap-My. 



18. D. uniflorum Rydb. Leaves spatulate or oblanceolate, almost sessile, 

 densely puberulent, 1-2 cm. long, obtuse or acutish; scape 5 cm. or less; cah-x- 

 lobes Unear-lanceolate, 2-3 mm . long; corolla dark bluish pmple, with a j^eUow 

 throat, which has or has not a dark way\- hne; lobes oblong, about 1 cm. long; 

 anthers 3 mm. long, dark purplish blue, with yellowish sides ; capsule cjlindric, 6-10 

 nun. long, spHtting into valves. Mountainsides: Mont. Mont. — Subalp. Je-Jl. 



13. SAMOLUS (Toum.j L. Water Pimpebxel, Brookweed. 



Annual or perennial, caulescent herbs. Leaves alternate, entire. Flowers 

 in terminal racemes or panicles. Sepals united at the base, persistent. Hy- 

 panthivun more or less developed. Corolla perig\-nous, short-salverform; tube 

 ver\- short; lobes roimded, imbricate. Stamens 5, adnate to the corolla-tube; 

 staminodia sometimes present, narrow; anthers cordate. Ovarj' l-ceUed; stigma 

 capitate. O^iiles numeroiis, haK-anatropous. Capsule short, o-valved at the 

 apex. Seeds niunerous. 



1. S. floribundus H.B.K. Stem 1-6 dm. high; leaves few, spatulate, or 

 oval, obtuse, 3-15 cm. long, narrowed into winged petioles; upper stem-leaves 

 subsessUe and ovate; sepals ovate or triangular; corolla white, 3 mm. broad; 

 staminodia 5, at the sinuses of the coroUa. ^\*et places: Xewf. — Fla.— <^alif. — 

 B.C.; Mex. Plain. Je-Au. 



F-\3iiLT 101. OLEACEAE. Olive F-Uhlt. 



Shrubs or trees, rarely herbs. Leaves opposite, exceptional!}'' alternate or 

 whorled, without stipules, simple or pinnately comp)ound. Flowers mostly 

 paniculate, perfect, polygamous, or dioecious, regular, complete or incom- 

 plete. Sepals usually -1, partially united, rarely wanting. Petals 2-6, dis- 

 tinct or partially united, narrow, imbricate or valvate, or wanting. Sta- 

 mens 2 or 4, adnate to the base of the corolla, if the latter is present. Gjm- 

 ■)ecium of 2 imited carpels; ovarj' 2-ceUed, free; stigmas capitate or 2-lobed. 

 Fruit a loculicidal, 2-valved capsule, a samara, or a berrj^. Seeds usually 

 solitary-, sometimes 2—4. 



Fruit indehiscent ; plant dioecious or polygamous; corolla in ours wanting; calyx-lobes 4. 



Fruit a samara. 1. Fraxixcs. 



Fruit a drupe. 2. ForeoTier.\. 



Fruit a dehiscent, didymous capsiole; flowers perfect; corolla present, rotate. 5-lobed; 



calyx .S-15-lobed. 3. Mexodora. 



1. FRAXINUS (Toum.) L. Ash. 



Trees or shrubs. Leaves opposite, usually odd-pinnate, rarely simple. 

 Flowers inconspicuous, polygamous or dioecious, usually in panicles. Calj-x small, 



i 



