Seed ID


Agavaceae and Cactaceae


Plant Photo Scientific Name Common Name and Description Seed Photo
Agave Plant Agave lechuguilla Common Name: Agave
Leaves: 3.5 dm long and 2-3 cm wide, linear, straight to falcate (sickle-shaped) or upcurving
Flowers: In clusters of 1-3, ovary greenish-yellow, fusiform (spindle-shaped - thickest near the middle and tapering toward each end), 12-14 mm long, tepals 12-18 mm long, spreading, linear, yellow to red or purplish
Fruit: Capsules oblong, 2-3 cm long
Habitat: Open arid calcareous rocky slopes
Range: West Texas, southern New Mexico, southeast across the Mexican highlands to State of Mexico
Group: Monocot
Family: Agavaceae
Growth Habit: Subshrub/Shrub/Forb/Herb - small widely suckering yellow-green rosettes 2.5-4 dm tall
Duration: Perennial
U.S. Nativity: Native
Agave Seed
Banana yucca Yucca baccata Common Name: Banana Yucca, Blue Yucca or Datil
Leaves: Broadened toward the middle, commonly straight or incurved, occasionally twisted, rather deeply concavo-convex, quite rigid, 3-7 dm long and 3.5-5 cm wide
Flowers: Campanulate (bell-shaped), pendent, white or cream-colored, commonly tinged with purple
Fruit: 7-24 cm long 25-55 mm in diameter, symmetrical, broadly cylindrical or somewhat tapering; seeds to 11 mm flat, thick, rough, dull black
Habitat: On rocky hill and mountain slopes and plains of grasslands, juniper and oak woodlands
Range: West Edwards Plateau and Trans-Pecos, Texas to California and adjacent Mexico
Group: Monocot
Family: Agavaceae
Growth Habit: Subshrub/Shrub/Forb/Herb - clumped at ground level 1-5 m in diameter, with as many as 70 heads of leaves
Duration: Perennial
U.S. Nativity: Native
Banana yucca
Hedgehog Cactus Echinocereus enneacanthus Common Name: Hedgehog Cactus or Pitaya
Leaves: Not discernible, 1-4 central spines per areole, 25-94 mm long; 7-10 radial spines
Flowers: On the old growth below the apex of the stem, bursting through the epidermis just abouve the spine-bearing areole; 7.5-12.5 cm in diameter
Fruit: Red flesh with deciduous areoles bearing spines, has a fragrant odor and a flavor and texture resembling the strawberry; black seeds strongly tuberculate (covered with tubercles) to pitted, 1-1.4 mm long
Habitat: Dry, sandy soils
Range: Val Verde to Kimble, Kerr and Cameron counties; also Chihuahua and Tamalupas
Group: Dicot
Family: Cactaceae
Growth Habit: Shrub/Subshrub - stems profusely branching with 120-350 forming clumps up to several dm high and 6-20 dm in diameter; stems cylindroidal
Duration: Perennial
U.S. Nativity: Native
Hedgehog Cactus
Prickly Pear Opuntia Lindheimeri engelmannii Common Name: Texas Prickly Pear or Nopal Prickly Pear
Leaves: Spines in all but the lower areoles, 1-6 per areole
Flowers: 5-7.5 cm in diameter; petaloid perianth parts yellow
Fruit: Purple, fleshy, obovate or elongate 3.1-7 cm long
Habitat: On rocky hill and mountain slopes
Range: Texas, New Mexico and Mexico
Group: Dicot
Family: Cactaceae
Growth Habit: Shrub/Subshrub - 1 to 3 m high joints green or blue-green, obovate to orbiculate or rarely elongate, 15-25 cm long
Duration: Perennial
U.S. Nativity: Native
Prickly Pear
Pencil Cholla Opuntia leptocaulis Common Name: Tasajillo, Christmas Cactus or Pencil Cholla
Leaves: Spines 1 per areole, 2.5-5 cm long
Flowers: Flower 1-1.5 cm in diameter; petaloid perianth parts green to yellow or bronze
Fruit: Bright red, fleshy, juicy, tuberculate, obovoid, 2 cm long
Habitat: Rocky soils of desert hillsides
Range: Southern New Mexico to Texas west of the Pecos River
Group: Dicot
Family: Cactaceae
Growth Habit: Shrub/Subshrub - small with joints of the main branches to 3-4 dm long; cylindroidal; tubercles almost lacking
Duration: Perennial
U.S. Nativity: Native
Pencil Cholla


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.