286 PASSIFLOEACEAE. 



2. Casearla spinescens (Sw.) Griseb. Cat. PI. Cub. 10. 1866. 



Swrnyda spinescens Sw. Prodr. 68. 1788. 



A shrub, 3 m. high or less, or a small tree about 4 m. high, unarmed, or 

 with short spinescent spurs, the branches sometimes elongated and vine-like, 

 the young twigs appressed-pubesoent. Leaves obovate to oval or elliptic, 

 membranous, 2-7 cm. long, obtuse or acute at the apex, narrowed at the base, 

 low-orenate, pubescent on both sides when young, becoming glabrate, the 

 petioles 2-8 mm. long ; cymes several-flowered, pubescent, sessile in the axils or 

 on leafless twigs; pedicels stout; calyx pubescent, 5-6 mm. long, green, about 

 as long as the pedicel, its rounded segments ovate or elliptic, obtuse; stami- 

 nodia ovate, broad, a little shorter than the stamens; fruit oblong, 1.5-2 em. 

 long. 



Coppices, New Providence, at Waterloo ; Andros. near Crow Hill : — Cuba ; His- 

 panlola ; Tobago ; Trinidad ; Guiana. Recorded in Bull. N. Y. Bot. Gard. 5 : 316, as 

 0. ana A. Eich., following Grisebach. Spiny Caseaeia. 



Order 18. PASSIFLORALES. 



Herbs, tendril-bearing vines, shrubby plants, or succulent trees vpitb a 

 milky sap. Leaves alternate, entire or lobed. Plowers perfect, or v^hen 

 dioecious, the staminate and pistillate very different. Calyx of 5 more or 

 less united sepals. Corolla of 5 distinct or partially united petals, some- 

 times accompanied by a fringed crown. Stamens 5 or 10 in 2 unequal 

 rows. Ovary superior, 1-eelled, with 3-5 parietal placentae. Stigmas 

 entire, notched or forked. Fruit a berry or capsule. 

 Corolla accompanied by a crown (corona) ; flowers perfect, all alike. 



Fam. 1. PASSIFLOEACEAE. 



Corolla not accompanied by a crown; flowers mainly dioe- 

 cious, the staminate and pistillate different. Pam. 2. Caeicaceae. 



Family 1. PASSIFLORACEAE Dumort. 



Passion-flower Family. 



Vines, climbing by tendrils, or rarely erect herbs, with petioled usually 

 palmately-lobed leaves, and perfect regular flowers. Calyx-tube persistent. 

 Petals usually 5, inserted on the throat of the calyx, distinct, or in some 

 species united. Stamens 5. Throat of the calyx crowned with a double 

 or triple fringe. Filaments subulate or filiform, monadelphous, or sepa- 

 rate. Ovary free from the calyx, 1-eelled; placentae 3-5, parietal; styles 

 1-5. Fruit a berry or capsule, usually many-seeded. About 18 genera 

 and 350 species, of warm and tropical regions, most abundant in South 

 America. 



1. PASSIFLORA L. Sp. PI. 955. 1753. 



Climbing tendril-bearing vines, with alternate or rarely opposite leaves, 

 and large axillary flowers, on jointed, often bracted peduncles. Calyx-tube 

 cup-shaped or campanulate, 4-5-lobed, the lobes narrow, imbricated in the 

 bud, its throat crowned with a fringe called the corona. Petals 4 or 5 (rarely 

 none), inserted on the throat of the calyx. Ovary oblong, stalked. Filaments 

 monadelphous in a tube around the stalk of the ovary, separate above; an- 



