222 ' VALERIANACEAE 



Fruit smooth, narrowly ovate: inflorescence of staminate plant rather dense, with 

 short branches; corolla 3-4 mm. wide. 4. V. ceratophylla. 



Leaves tliin, the cauline ones pinnate; veining distinctly pinnate; plants with rootstocks. 

 Bases of the stem-leaves and nodes of the stem neither cihate nor bearded ; stem finely 

 pruinose-pubernient. 

 Fruit pilose; flowers perfect. 5. V. piibicarpa. 



Fruit glabrous: plant polygamo-dioecious. 6. V. puberulenta. 



Bases of the stem-leaves and the nodes of the stem ciliate or bearded ; stem otherwise 

 glabrous or slightly pubescent. 

 Ovary and fruit at least when young pubescent. 7. V. micranlha. 



Ovary and fruit glabrous. 



Basal leaf-blades ovate-cordate. 8. V. ovata. 



Basal leaf-blades spatulate, oval or lanceolate, tapering at the base. 



Corolla of the pistillate plants 2-3 mm. long and slightly wider: inflor- 

 escence in fruit elongate and narrow. 9. V. septenlrionalis. 

 Corolla of the pistUlate plants 3 mm. or more long ; inflorescence even in 

 fruit short, corymbiform or subcapitate. 

 Lateral leaflets or lobes of the stem-leaves small, Unear-lanceolate, 



acuminate. 10. V. acutiloba. 



Lateral leaflets of the stem-leaves ample, ovate to lanceolate, acute. 



Corolla 3-4 mm. long; leaflets from entire to sUghtly sinuate 



11. V. occidenlalis. 

 CoroUa 5—8 mm. long; leaflets from sinuate to coarsely toothed. 

 Leaflets sinuate or sinuate-denticulate; corolla 5-6 mm. long: 



tube attenuate at the base. 12. V. Scouleri. 



Leaflets coarsely sinuate-dentate; corolla 6-8 mm. long, not con- 

 spicuously narrowed below. 13. V. sitchensis. 



Family 12S. ARISTOLOCHIACEAE. Birthwort Family. 

 1. ASARUM (Tourn.) L. Wild Ginger. l. A. caudatum. 



Family 120. CUCURBITACEAE. Gourd Family. 



Fruit large, with a tough rind, 1-celled, with 3-5 placentae and numerous seeds: corolla 

 large, yellow, campanulate; flowers solitary in the axils. 1. Cucurbit.\. 



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

 staminate flowers racemose or paniculate. 2. Micrampeli.s. 



1. CUCtJRBITA (Tourn.) L. Gourd, Pumpkin, Squash. i. C. foetidissima. 



2. MICRAMPELIS Raf. Balsam Apple, Mock Apple. i. i\/. lobata. 



Family 130. CAMP ANUL ACE AE. Bellflower Family. 



Capsule opening by 2-5 lateral pores. 



Corolla campanulate or funnelform; flowers all well developed; capsule turbinate. 



I. Campanul.\. 



Corolla rotate; earlier flowers cleistogamous ; capsule linear. 2. SPEruL.\Ri.\. 



Capsule thin- waded, irregularly bursting between the ribs, obp>Tamidal: earlier flowers 



cleistogamous. 3, Heterocodon. 



1. CAMPANULA (Tourn.) L. Bellflower, Harebell, Bluebell. 

 Flowers more than 1 cm. long; plant simple or witli erect or ascending branches. 



Style not exserted. 



'^apsule erect, opening by pores near the summit, just below the base of the sepals. 

 Hypanthium and pod club-shaped, constricted just below the sepals, often 



hairy; leaves entire: sepals obtuse. 1. C. uniflora. 



Hj-pantliium and pod turbinate, not constricted; sepals acuminate. 



Hypanthium villous; leaves saliently dentate. 2. C. lasiocarpa. 



Hypantliiura glabrous; leaves entire or minutely denticulate. 



3. C. Parryi. 

 CansiUe nodding, opening by pores near the base. 



Sepals erect; leaves thick. 4. C. petinlata. 



Sepal? spreading or reflexed; leaves tliin. 5. C. hcterodoxa. 



Style exserted. fi. C. MacDougalii. 



Flowers 5-8 mm. long; branches divaricate; stem retrorse-hispid. 7. C. aparinoides. 



2. SPECULARIA (Heist.) Fabrioius. Venus's Looking-glass. 



Leaves cordate-clasping; capsule oblong. 1. S. perfoliata. 



Leaves linear or linear-lanceolate: capsule linear-cylindric. 2. S. Icptocarpa. 



3. HETEROCODON Nutt. l. H. rariflomm. 



Family 131. LOBELIACEAE. Lobelia Family. 



Anthers distinct, merely surrounding the pistil ; stem-leaves reduced, subiUate, bract-like. 



1. Nemacladus. 



