VALERIAN FAMILY 821 



obHque, about 5 mm. wide. IMountains: Wyo. — X.M. — Utah. Mont. — Alp. 

 Je-Au. 



11. V. occidentalis Heller. Stem 5-8 dm. high, glabrous or sparingly 

 puberulent; basal leaves petioied, thin, simple, eUiptic or spatulate, entire, 2-8 

 mm. long; stem-leaves 2-4 pairs, pinnate, with 3-9 leaflets, those of the lower 

 leaves elliptic, those of the upper narrowly lanceolate; inflorescence open; 

 corolla white, of the pistillate flowers, 3-3.5 mm. long, 3-4 mm. broad; fruit 

 glabrous, 5 mm. long, 2 mm. wide. Wet places in the mountains: Mont. — Colo. 

 — Utah — Wash. — B.C. Submo7it. — Mont. Je-Au. 



12. V. Scouleri Rydb. Stem glabrous; basal leaves simple or 3-5-foUolate; 

 blade or terminal leaflet obovate or orbicular, the lateral ones elhptic; stem-leaves 

 3-7-foholate ; leaflets oval or eUiptic or those of the upper leaves lanceolate; 

 flowers usually perfect; coroUa white; fruit glabrous, 6 mm. long, 2 mm. wide. 

 Wet places: B.C. — Alta. — Mont. — Ore. Submont. — Mont. Je-Au. 



13. V. sitchensis Bong. Stem 4-7 dm. high, glabrous or nearly so; stem- 

 leaves 3-5-foliolate; leaflets of the lower ones broadly ovate, of the upper lance- 

 olate, 5-8 cm. long, sparingly pUose or nearly glabrous; basal leaves similar or 

 simple, usually none at flowering time; cyme short and corj'mbiform ; flowers 

 mostly perfect; fruit glabrous, 6 mm. long, 2 mm. broad. Wet places: Alaska 

 — Ore. — Ida. — Yukon. Submont. — Mont. Jl-Au. 



Family 128. ARISTOLOCHIACEAE. Birthwort Family. 



Perennial herbs or vines. Leaves alternate, or basal, petioied. Flowers 

 perfect, regular or irregular. Hypanthium usually well developed, often 

 wholly enclosing the ovary. Calyx regular or irregular, mostly of 3 sepals. 

 Corolla wanting. Stamens 6 to man}-; filaments either free or adnate to 

 the style column. Styles united; ovary 4-6-ceUed; ovules many in each 

 cavity. Fruit a capsule. Seeds numerous; endosperm fleshy. 



1. ASARUM (Tourn.) L. Wild Ginger. 



Perennial acaulescent herbs, ■^'ith elongate rootstocks. Leaves 2, basal, 

 petioied; blades cordate or reniform. Flowers perfect, regular, solitary, on a 

 scape arising between the leaves. Hypanthium weU developed, campanulate, 

 enclosing the ovarj', angled. Sepals 3, inflexed in bud. Stamens 12, free. 

 Ovarj^ inferior, 6-celled; styles 6, united. 



1. A. caudatum Lindl. Leaf -blades cordate-reniform, acutish at the apex, 

 sparinglj' pubescent on the veins, 5-10 cm. broad; peduncle 1-3 cm. long; calj-x- 

 lobes lanceolate, caudate-attenuate, 2.5-5 cm. long. Woods and thickets: B.C. 

 — Ida. — Calif. Submont.- — Mont. Ap-Jl. 



Family 129. CUCURBITACEAE. Gourd Family. 



Annual or perennial succulent herbs, trailing or climbing by means of 

 tendrils. Leaves alternate, palmately veined or lobed, usually rough-hairy. 

 Flowers usualh' axillarj-, monoecious or dioecious. Cah'x of 4-6, more or 

 less united sepals, imbricate. Corolla of as many petals which are more or 

 less united. Stamens 1-5, often .3, two with 2-ceUed and one 'O'ith 1-celled 

 anthers; filaments distinct or united; anthers extrorse, often twisted. Gynoe- 

 cium of a compound pistil; ovary 1-3-celled; stj'les terminal, united; stigma 

 thick, dilated, or ringed. Fruit a pepo (large fleshy or dry berry ■vsith thick 

 rind). Seeds usually numerous, flat and horizontal; endosperm wanting; 

 embrvo straight, with thick cotvledons. 



*o* 



Fruit large, with a tough rind, I-celled, with 3-5 placentae and numerous seeds; corolla 

 large, yellow, campanulate; flowers solitary in the axils. I. Cl'curbit.\. 



Fruit spiny, becoming papery and spongiose, 2-3-celled; seeds few; coroUa white, rotate; 

 staminate flowers racemose or paniciilat«. 2. Micrampelis. 



