476 PROCEEDINGS OF THE ACADEMY OF [PaRT III 



Corolla glabrous within on posterior side, hirsute within anteriorly. 



Bractlets lanceolate-linear, at least half the length of the sepals. 



Lower pedicels as long as or longer than the calyx. Herbage 



finely hispid-pubescent, shghtly glandular. Stems erect, 1-6 dm. 



tall. S. schottii. 



Corolla densely pubescent within on posterior side, pubescent with 



shorter hairs anteriorly. Bractlets subulate, less than half 



length of sepals. Pedicels all much shorter than the calyx. 



Herbage white-lanose, not glandular. Stems extensively repent. 



S. tomentosa. 



1. Stemodia schottdi Holz. 



Stemodia schottii Holz., in Contrib. U. S. Nat. Herb. 1: 286. pi. 20. 1893. 

 "Habitat, southern Texas, along the Rio Grande. Collected byDr. Schott 

 at Rio Grande, Texas, in 1853; and by G. C. Nealley, at Comstock, Val- 

 verde County, Texas, in 1889 (No. 305)." Type seen in United States 

 National Herbarium. 



Valverde County, Texas. Ranges from Texas to southern 



California, and south to JaHsco. Nearly related to the wide-spread 



Tropical American S. durantifolia (L.) Sw., but seeming to differ in 



its lower habit and longer pedicels. Needs further field study. 



2. Stemodia tomentosa (Mill.) Greenm. & Thomps. 



Erinus fomentosus Mill., Gard. Diet. ed. VIII. n. 2. 1768. "Sent ... by 

 the late Dr. Houstoun from La Vera Cruz." Description sufficiently dis- 

 tinctive. 



Stemodia tomentosa (Mill.) Greenm. & Thomps., in Ann. Missouri Bot. 

 Gard. 1:409. 1915. 



Recorded in Coulter's Botany of Western Texas under the later, 

 but more appropriate, name, Stemodia lanata Ruiz & Pavon. 



Sands of the seashore, extreme southern Texas. Ranges south- 

 ward along the Gulf coast to Vera Cruz 



Texas. Cameron: Brazos Santiago, Nealley 348 (U). 



9. ILYSANTHES Raflnesque. 



Ilysanthes Raf., Ann. Nat. 13. 1820. 



Type species, /. riparia Raf., of the banks of the Ohio. 



Pedicels relatively stout, at least in fruit shorter than the bracts. 

 Leaves 1-3 cm. long, usually obviously narrowed at base. Sepals 

 usually finely pubescent, usually about equaling the capsule. 



/. dubia. 

 Pedicels filiform, longer than the bracts. Leaves .5-1.5 cm. long, 

 rounded at base, or at least broadest much below the middle. 

 Sepals glabrous or nearly so, shorter than the capsule. 



/. inaequalis. 



1. Hysanthes dubia (L.) Barnhart. 



Gro<io/o dubia L., Sp. PI. 17. 1753. "Habitat in Virgianiae aquosis . . . 



Gron. virg; 129". Type, Clayton 164, identified by Dr. B. L. Robinson in 



Rhodora 10: 67, 1907, as the species here considered. 

 Ilysanthes dubia (L.) Barnhart, in Bull. Torr. Bot. Club 26: 376. 1899. 



