Passifloraceae and Vitaceae

Plant Photo	Scientific Name	Common Name and Description	Seed Photo
	Passiflora affinis	Common Name: Passion Vine Leaves: Glabrous; 2-10 cm long and 3-14 cm wide, usually lobed from a half to two thirds their length, cordulate or subtruncate at base, 3-nerved Flowers: Calyx tube campanulate to cylindric; corona of 1 to several series of distinct or more or less united filaments rarely tubular Fruit: Subglobose, glabrous, 8-10 mm long, purplish-black; seeds numerous, obcordate, about 3 mm long and 2 mm wide, transversely sucate, the grooves 6 or 7 Habitat: Limestone areas Range: Edwards Plateau in Texas and northern Mexico Group: Dicot Family: Passifloraceae Growth Habit: Vine/Forb/Herb Duration: Perennial U.S. Nativity: Native
	Vitis mustangensis	Common Name: Mustang Grape Leaves: Broadly triangular-ovate to ovate-reniform, subacute to obtuse at apex, 6-14 cm long from top of petiole, about as wide as - or wider than - long, white-tomentose (felty) on both sides when young, later dark-green and glabrous or somewhat floccose on upper side and permanently white-tomentose on lower surface Flowers: Thyrse 5-12 cm long Fruit: 1.5-2 cm, thick, purple black, tough skin, fiery disagreeable taste, 2 celled with 2-4 seeds; seeds are 6-7 mm long and 6-7 mm broad, usually pyriform (pear-shaped) with a beaklike base and 2 grooves on the ventral side Habitat: Along stream bottoms, thickets, fence rows, edges of woods, sandy slopes Range: East half of Texas; Oklahoma, Arkansas, Louisiana, Alabama Group: Dicot Family: Vitaceae Growth Habit: Vine Duration: Perennial - shrubs or vines with watery acid juice, usually climbing by tendrils opposite the leaves U.S. Nativity: Native

References:

Thumbnails of the plant photos were copied from those photos produced by the Texas A&M Bioinformatics Working Group which can be found at the Vascular Plant Image Gallery in the Flowering Gateway. When clicking on the thumbnail your are taken to their originals.

Thumbnails and enlargements of seed photos are from my own personal collection.

Some plant information has been taken from these sources:

Manual of the Vascular Plants of Texas, Donovan S. Correll and Marshall C. Johnston, University of Texas at Dallas, 1979.

USDA, NRCS. 2001. The PLANTS Database, Version 3.1. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Trees, Shrubs, and Woody Vines of the Southwest: A guide for the states of Arkansas, Louisiana, New Mexico, Oklahoma, and Texas, Robert A. Vines, University of Texas Press, 1994.