1340 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



Leaves linear or nearly so. 



Branches of the inflorescence glabrous 1. C. pectinata. 



Branches of the inflorescence puberulent. 



Pubescence glandular 2. C. lindauiana. 



Pubescence eglandular 3. C. linearif olia. 



Leaves lanceolate to broadly ovate. 

 Flowers axillary or in short racemes. 



Stems very minutely puberulent, the hairs scarcely perceptible. 



4. C. parvifolia. 

 Stems pilose or pubescent, the hairs conspicuous. 



Pubescence all or chiefly eglandular 5. C. pubens. 



Pubescence chiefly of gland-tipped hairs. 



Leaves cordate or subcordate at base 6. C. glandulosa. 



Leaves obtuse or acute at base 7. C. serpyllifolia. 



Flowers chiefly in long naked spikes. 

 Branches bisulcate and angulate. 



Stems scaberulous; capsule glabrous 8. C. ovata. 



Stems sparsely hirsute; capsule puberulent 9. C. haplocarpa. 



Branches terete. 



Leaves nearly sessile, 6 mm. wide or less 10. C. arizonica. 



Leaves conspicuously petiolate, 1 to 4 cm. wide or larger. 



Leaves rounded or obtuse at base 11. C. glabrata. 



Leaves cordate or subcordate at base. 



Stems very minutely puberulent - 12. C. cordifolia. 



Stems short-pilose or pubescent 13. C. californica. 



1. Carlowrightia pectinata T. S. Brandeg. Proc. Calif. Acad. II. 3: 160. 1891. 

 Baja California, Sonora, and Sinaloa; type from San Jose del Cabo, Baja 



California. 



Plants slender, herbaceous or suffrutescent, erect or decurrent, glabrous; leaves 

 sessile, 2 to 10 cm. long, 2 to 7 mm. wide; flowers in interrupted panicled few- 

 flowered spikes; corolla 6 to 7 mm. long, the tube much shorter than the lobes. 



C arlowrightia fimhriata T. S. Brandeg.,' described from San Pedro, Baja Cali- 

 fornia, is scarcely distinct. 



2. Carlowrightia lindauiana Standi. 



Carlowrightia linearifolia Lindau, Bull. Herb. Boiss. 5: 661. 1897. Not 

 C. linearifolia A. Gray, 1877. 



Queretaro and Hidalgo; type from some unknown Mexican locality. 



Plants slender, woody below, the stems striate, glabrate; leaves 2 to 5 cm. 

 long, 5 mm. wide or less, sessile or nearly so, glabrous or scaberulous; flowers in 

 slender interrupted naked spikes; corolla purplish, 8 to 10 mm. long, the tube 

 2 mm. long; capsule puberulent or glabrous. 



3. Carlowrightia linearifolia (Torr.) A. Graj', Proc. Amer. Acad. 13: 364. 



1877. 



Schaueria linearifolia Torr. LT. S. & Mex. Bound. Bot. 123. 1859. 



No Mexican specimens seen by the writer, but the plant doubtless occurs in 

 Chihuahua. Western Texas to southern Arizona. 



Plants herbaceous or often fruticose below, the branches minutel^y scaberulous; 

 leaves narrowly linear, 1 to 3.5 cm. long, scaberulous; flowers pedicellate, race- 

 mose-paniclate; corolla purplish, 1 cm. long. 



4. Carlowrightia parvifolia T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 190 



1911. 



> Proc. Calif. Acad. II. 3: 161. 1891. 



