138 PASSIFLORACE^E. (PASSION-FLOWER FAMILY.) 



ORDER 47. PASSIFLORACE^E. (PASSION-FLOWER FAM.) 



Vines, climbing by tendrils, with perfect flowers, 5 monadelphous stamens, 

 and a stalked 1-celled ovary free from the calyx, with 3 or 4 parietal placers 

 tee, and as many club-shaped styles ; represented by the typical genus 



1. PASSIFJLORA, L. PASSION-FLOWER. 



Calyx of 5 sepals united at the base, imbricated in the bud, the throat crowned 

 with a double or triple fringe. Petals 5, arising from the throat of the calyx. 

 Stamens 5 : filaments united in a tube which sheathes the long stalk of the ovary, 

 separate above : anthers large, fixed by the middle. Berry (often edible) many- 

 seeded ; the anatropous albuminous seeds invested by a pulpy covering. Seed- 

 coat brittle, grooved. Leaves alternate, palmately lobed, generally with stip- 

 ules. Peduncles axillary, jointed. (Name, from passio, passion, and flos, a 

 flower, given by the early missionaries in South America to these flowers, in 

 which they fancied a representation of the implements of the crucifixion.) 



1. P. llitea, L. Smooth, slender; leaves obtusely 3-lobed at the summit, the 

 lobes entire; petioles glandless; flowers greenish -yellow (!' broad). 1J. Damp 

 thickets, S. Penn. to 111., and southward. July - Sept. Fruit \' in diameter. 



2. P. incarnata, L. Nearly smooth ; leaves 3-cleft ; the lobes serrate ; 

 petiole bearing 2 glands ; flower large (2' broad), nearly white, with a triple pur- 

 ple and flesh-colored crown ; involucre 3-lcaved. Dry soil, Virginia, Kentucky, 

 and southward. May -July. Fruit of the size of a hen's egg, oval, called 

 Maypops. 



ORDER 48. CUCURBITACE-3E. (GouRD FAMILY.) 



Herbaceous mostly succulent vines, with tendrils, dioecious or monoecious 

 (often monopetalous} flowers, the calyx-tube cohering with the l-3-cetted 

 ovary, and the 3-5 stamens commonly more or less united by their often tor- 

 tuous anthers as well as by the filaments. Fruit (pepo) fleshy, or sometimes 

 membranaceous . Limb of the calyx and corolla usually more or less com- 

 bined. Stigmas 2-3. Seeds large, usually flat, anatropous, with no albu- 

 men. Cotyledons leaf-like. Leaves alternate, palmately lobed or veined. 

 (Mostly tropical or subtropical.) 



Synopsis. 



1. SICYOS. Corolla of the sterile flowers flat and spreading, 5-lobed. Fruit prickly, Inde 



hiscent, 1-celled, 1 seeded. 



2. ECHINOCYSTIS. Corolla of the sterile flowers flat and spreading, 6-parted. Pod prickly 



2-celled, 4-seeded, bursting at the top. 



8. MELOTHRIA. Corolla of the sterile flowers somewhat campanulatc, 5-cleft. Berry 

 smooth, many-seeded. 



1. SICYOS, L. ONE-SEEDED SxAR-CucuaiuER. 



Flowers monoecious. Petals 5, united below into a bell-shaped or flatdsh 

 corolla. Stamens 3-5 all cohering. Ovary 1-celled, with a single suspended 



