PRIMROSE FAMILY 655 



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

 flowered; calyx-tube about 2 mm. long; lobes lanceolate, 3 mm. long; corolla 

 lilac-purple, with yellowish throat, often with a wavy purple line; lobes oblong, 

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

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

 Mont. My-Jl. 



16. D. puberulentum Heller. 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; calyx-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; calyx-tube 

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

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

 capsule cylindric, about 8 mm. long. D. Meadia puberulum Nutt. 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; calyx- 

 lobes linear-lanceolate, 2-3 mm. long; corolla dark bluish purple, with a yellow 

 throat, which has or has not a dark wavy line; lobes oblong, about 1 cm. long; 

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

 mm. long, splitting into valves. Mountainsides: Mont. Mont. Subalp. Je-Jl. 



13. SAMOLUS (Tourn.) L. WATER PIMPERNEL, BROOKWEED. 



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

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

 panthium more or less developed. Corolla perigynous, short-salverform; tube 

 very short; lobes rounded, imbricate. Stamens 5, adnate to the corolla-tube; 

 staminodia sometimes present, narrow; anthers cordate. Ovary 1-celled; stigma 

 capitate. Ovules numerous, half-anatropous. Capsule short, 5-valved at the 

 apex. Seeds numerous. 



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 

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

 staminodia 5, at the sinuses of the corolla. Wet places: Newf. Fla. Calif. 

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



FAMILY 101. OLE ACE AE. OLIVE FAMILY. 



Shrubs or trees, rarely herbs. Leaves opposite, exceptionally alternate or 

 whorled, without stipules, simple or pinnately compound. Flowers mostly 



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

 oecium of 2 united carpels: ovary 2-celled, free; stigmas capitate or : 

 Fruit a loculicidal, 2-valved capsule, a samara, or a berry. S.vds usually 

 solitary, sometimes 2-4. 



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



Fruit a samara. 



Fruit a drupe. FOIU>TII;IU 



Fruit a dehiscent, didymous capsule; flowers perfect; corolla present, rotate, ,)-lobed; 



calyx 5-15-lobed. 



1. FRAXINUS (Tourn.) L. ASH. 



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

 Flowers inconspicuous, polygamous or dioecious, usually in panicles. Calyx small, 



