Seed ID

Passifloraceae and Vitaceae

Plant Photo Scientific Name Common Name and Description Seed Photo
Passion vine 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
Passion vine
Grape 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



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.