WOOTON AND STANDLEY FLORA OF NEW MEXICO. 597 



7. Pedicularis fluviatilis Heller, Minn. Bot. Stud. 2: 33. 1898. 



Type locality: Meadow 9 miles east of Santa Fe, New Mexico. Type collected 

 by Heller (no. 3G39). 



Range: Northern New Mexico and southern Colorado. 



New Mexico: Santa Fe and Las Vegas mountains; Sierra Grande. Mountains, in 

 the Transition Zone. 



This is closely related to the eastern P. canadensis L., but appears to be fairly 

 distinct. 



128. ACANTHACEAE. Acanthus Family. 



Annual or perennial herbs or slu'ubs, with alternate or opposite leaves; flowers 

 perfect, irregular, sometimes solitary, often subtended by large bracts; calyx of 5 

 variously united or distinct sepals; corolla of 5 partially united petals, 2-lipped; 

 stamens 2 and equal or 4 and didynamous; styles terminal, united; fruit a capsule, 

 usually with 2 cavities, opening with an elastic longitudinal dehiscence. 



. KEY TO THE GENERA. 



Cauline leaves reduced to imbricated scales 1. Tubiflora (p. 597). 



Cauline leaves not reduced to scales. 

 Shrubs. 



Corolla purplish red; tall shrub 50 cm. high or 



more; corolla deeply bilabiate 2. Anisacanthus (p. 597). 



Corolla white; low shrub, 30 cm. high or less; 



corolla nearly regular 6. Ruellia (p. 598). 



Low herbs. 



Corolla convolute in bud; flowers covered by 



large bracts 3. Diapedium (p. 598). 



Corolla imbricated in bud ; flowers not covered 

 by bracts. 



Stamens 4; plants liirsute 4. Carlowrightia (p. 598). 



Stamens 2; plants glabrous 5. Stenandrium (p. 598). 



1. TUBIFLOBA J. F. Gmel. 



Perennial caulescent herb with numerous large basal leaves, those of the stems 

 reduced to imbricated scales; flowers in dense spikes; corolla white or blue, with a 

 slender tube; stamens 2. 



1. Tubiflora squamosa (Jacq.) Kuntze, Rev. Gen. PI. 2: 500. 1891. 



Verbena squamosa Jacq. PI. Hort. Schonbr. 1: 3. pi. 5. 1797. 



Elytraria tridentata Yahl, Enum. PI. 1: 107. 1804. 



Type locality: Not known. 



Range: Western Texas to southern Arizona, southward through tropical America; 

 also in Africa. 



New Mexico: San Luis Mountains (Mearns 539). Dry, rocky hills. 



2. ANISACANTHUS Nees. 



Shrub with opposite entire leaves; flowers solitary, axillary; corolla purpUsh red, 

 with a slender elongated tube; upper lip entire or 2-cleft, the lower 3-lobed; stamens 

 included; capsules contracted into a stipelilce base; seeds 4 or fewer. 



1. Anisacanthus thurberi (Torr.) A. Gray, Syn. Fl. 2^: 328. 1878. 



Drejera thurberiTorv. U. S. & Mex. Bound. Bot. 124. 1859. 



Type locality: "Along w^.ter-courses, Las Animas, Sonera." Type collected by 

 Thurber. 



