CUCUKBITACEAE. 279 



2. AEISTOLOCHIA [Tourn.] L. Caulescent herbs, shrubs, or vines. 

 Leaves with narrow or broad blades. Flowers irregular, often S-shaped or 

 resembling a ' ' dutch pipe, ' ' the calyx usually coralloid. Hypanthium often 

 ribbed. Ovary inferior. Styles united into an angled column. Capsules pen- 

 dulous. BlRTHWORT. 



1. A. Serpentaria L. Plants dark-green, 1-4 dm. tall: leaf -blades oblong-lan- 

 ceolate to oval-lanceolate or rarely lanceolate, 4-15 cm. long: flowers about 1 

 cm. long: hypanthium- S-shaped, inflated at both ends: calyx-limb obtusely 

 3-lobed : capsule about 10 mm. in diameter. Common, in woods. Spr. 

 VIRGINIA- SNAKEROOT. 



Order C AMP ANUL ALES. 



Herbs or rarely shrubs or trees. Leaves mainly alternate: blades 

 simple, entire or divided. Flowers perfect, monoecious, or dioecious, 

 sometimes irregular. Hypanthium well developed. Calyx of several dis- 

 tinct or partly united sepals. Corolla of several distinct or partly united 

 petals. Androecium of 1-5 stamens. Anthers distinct or connate. Gynoe- 

 cium of 1-several united carpels, the ovary wholly or partly inferior. 

 Fruit capsular, baccate, or drupaceous. 



Endosperm wanting : flowers monoecious or dioecious : plants mainly vines. 



Fam. 1. CUCDBBITACEAE. 

 Endosperm present : flowers perfect or mainly so. 



Corolla regular : anthers separate. Fam. 2. CAMPANULACEAE. 



Corolla split on one side and otherwise more or less 



irregular : anthers united around the style. Fam. 3. LOBELIACEAE. 



FAMILY 1. CUCURBITACEAE. GOURD FAMILY. 



Vines, usually tendril-bearing. Leaves alternate : blades palmately or 

 pedately veined, and commonly lobed. Flowers monoecious or dioecious. 

 Calyx of 4 or 5, or rarely 6, distinct or partly united sepals. Corolla of 4 

 or 5, or rarely 6, distinct or partly united petals, sometimes adherent to 

 the calyx. Androecium of 3 stamens (2 anthers 2-celled and 1 anther 1- 

 celled), or rarely of 1, 2, 4, or 5 stamens. Filaments sometimes united. 

 Anthers straight or bent. Gynoecium 1-several-carpellary. Styles united. 

 Fruit a fleshy or partly dry berry (pepo). 



Fruit bladder-like, dehiscent: ovary 2-3-celled : ovules few, erect or ascending. 



1. MlCRAMPELIS. 



Fruit not bladder-like, indehiscent : ovary 1-celled : ovules solitary, 



pendulous. 2. SICYOS. 



1. MICBAMPELIS Eaf. Annual or perennial vines. Leaves with angu- 

 late or lobed blades. Flowers monoecious. Corolla rotate, relatively small. 

 Pistillate flowers usually solitary, with staminodia. Ovary echinate. Stigmas 

 lobed. Berry echinate, fibrous within, the rind tough. Seeds not filling the 

 cavities. MOCK-APPLE. 



1. M. lobata (Michx.) Greene. Stem and branches tender: leaf -blades 4-15 

 cm. long, palmately 3-5-lobed, the lobes triangular-ovate to lanceolate: sepals 

 2-4 mm. long: corolla rotate, 7-9 mm. wide; lobes lanceolate: berries inflated, 

 oblong to globose-oblong, 3-4.5 mm. long, bursting at the apex. Susque- 

 hanna valley. Frequent, in thickets. Sum. WILD BALSAM-APPLE. 



2. SICYOS L. Annual vines. Leaves with angulate or lobed blades. 

 Flowers monoecious. Corolla rotate, relatively small. Pistillate flowers clus- 



