WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 601 
1. CHILOPSIS D. Don. DESERT WILLOW. 
Large shrub, sometimes treelike, 2 to 5 meters high; leaves narrowly lanceolate, 
light green; flowers in terminal racemes, showy, purplish; calyx splitting into 2 
concave lobes; corolla about 25 mm. long, obscurely 2-lipped, the limb narrow; 
capsules tapering at both ends, terete, 10 cm. long or more; seeds small, numerous. 
1. Chilopsis linearis (Cav.) Sweet, Hort, Brit, 283. 1827. 
Bignonia ? linearis Cav. Icon. Pl. 3: 35, pl. 269. 1794. 
Chilopsis saligna Don, Edinburgh Phil. Journ, 9: 261. 1823. 
Tyre Locauity: Origin of type unknown. 
Rance: Western Texas to southern California and southward. 
New Mexico: Albuquerque; Clemow; Berendo Creek; Mangas Springs; Dog 
Spring; Apache Mountains; mesa near Las Cruces; west of Roswell; Organ Moun- 
tains. Low hills and sandy mesas, especially along arroyos, in the Lower Sonoran 
Zone. 
A form of this is not infrequent in cultivation as an ornamental shrub. Some of the 
cultivated plants have white flowers. 
2. STENOLOBIUM Don. 
Low shrub, about 1 meter high, with pinnate, incisely serrate, bright green leaves; 
flowers bright yellow, showy. 
1. Stenolobium incisum Rose & Standl, Contr. U.S. Nat. Herb. 16: 174. 1913. 
Type Locauity: Hills near Chihuahua, Mexico. 
Rance: Southern New Mexico, southward into northern Mexico. 
New Mexico: Dona Ana Mountains (Wooton & Standley). Dry hills, in the 
Lower Sonoran Zone. 
132. MARTYNIACEAE. Unicorn plant Family. 
1. PROBOSCIDEA Moench. UNICORN PLANT. 
Coarse clammy herbs with thick stems, long-petioled, usually large, opposite or 
alternate leaves, and axillary few-flowered racemes of large yellowish purple flowers; 
calyx lobes 4 or 5, more or less unequal; corolla campanulate to broadly funnelform, 
obscurely 2-lipped; stamens 2 or 4, their filaments filiform, the anthers divergent; 
ovary 1-celled, with 2 parietal placentw; style 1, stigmas 2; fruit a beaked curved 
capsule, becoming hard and woody, the beak splitting and forming 2 large opp osed 
hooklike appendages upon drying; seeds irregularly angled or flattened. 
The plants are often known as devil horns or devil claws, because of the form of 
the fruit. Some of the Arizona Indians use the black fiber of the pods in forming 
the patterns of their basketry. 
KEY TO THE SPECIES. 
Leaves small, 6 cm. wide or less, deeply lobed; plants low, 30 cm. 
high and 60 cm. wide or usually less.......-.-.-.--------- 1. P. altheaefolia. 
Leaves large, about 10 cm. wide or more, shallowly lobed or entire; 
plants much larger. 
Flowers 4 cm. long or more; leaves entire.....--.----.------ 2. P. louisiana. 
Flowers 3 cm. long or less; leaves shallowly lobed or angled.. 3. P. parviflora. 
1. Proboscidea altheaefolia (Benth.) Decaisne, Ann. Sci. Nat. V. Bot. 3: 324. 
1865. 
Martynia altheaefolia Benth. Bot. Voy. Sulph. 37. 1844. 
Type Locatity: Bay of Magdalena, Lower California. 
