

226 BOTANY OF THE DEATH VALLEY EXPEDITION. 



ISOETACEiE. 1 



Isoetes bolanderi Engclm. Amer. Nat. viii. 214(1874). Type localities, "in ponds 

 and shallow lakes on the Sierra Nevada of California, at an altitude of 5,000-10,000 

 feet (Tuolumne, Mount Dana, Mono-trail, Cisco, Mary's Lake) and on the Kooky 

 Mountains (Yellowstone Lake, 7,400 feet alt.) " 



In the high Sierra Nevada (Nos. 1643, 1650, 1691, 1722). [No. 1643 is referred here 

 doubtfully, with the following distinctive characterization: leaves flaccid, 20 to 30 

 em. high; sporangia immature, but maerospores in old, muddy bases of plants, dif- 

 fering only from 7. bolanderi in being more smooth; microspores also nearly smooth. 

 No. 1691 is a small, immature form, but it probably belongs here, — L. M. u.] 



SELAGINELLACEiE. 



Selaginella rupestris L. Sp. PI. ii. 1101 (1753), under Lycopodium; Spring in 

 Mart. PL Bras. i. pt. ii. 118 (1840). Type locality, "in Virginia, Canada, Siberia." 

 Near San Bernardino (No. 101), in Surprise Canon, Panamint Mountains (No. 628), 



and above timber-line on Mount Whitney (No. 2071). [These specimens represent 

 two of the many forms of this plant, No. 101 more slender, upright, and ascending, and 

 the others compact, stout, and closely creeping. — l. m. u.] 



EQUISETACE.53. 



Equisetum lasvigatum A. Br. Amer. Journ. Sci. xlvi. 87 (1843). Type locality, 

 "on poor, clayey soil, with Jndropogon and other coarse grasses, at the foot of the 

 rocky Mississippi hills, on the banks of the river, below St. Louis." 



Mill Creek Canon, Panamint Mountains (No. 808). 



Equisetum robustum A. Br. Amer. Journ. Sci. xlvi. 88 (1843). Type localities, 

 "islands of the Mississippi in Louisiana," "banks of Red River," "banks of the 

 Wabash and Ohio, and the Mississippi, near St. Louis; also on lakes and smaller 

 streams in that region," "and banks of the Missouri up to Eau-qui-coule River." 



Near San Bernardino (No. 13) and in the Panamint Mountains (No. 530). [The 

 specimens of No. 13 are sterile, and are referred here with some doubt. — L. M. u.] 



Equisetum variegatum Weber & Mohr, Deutsch. Crypt. Gewiich. 447 (1807). 

 Type locality European. 



Near San Bernardino (No. 27), in the Panamint Mountains (No. 531), in Panamint 

 Valley (No. 689), near Kernville (No. 1042), and near Three Rivers (No. 1297). [Of 

 the fertile specimens, No. 27 differs somewhat from the typical form of the species, 

 being larger, smoother, and with the spike scarcely cuspidate. Nos. 531 and 689 

 are sterile, and the latter approaches E. Iwvigatum in smoothness of stem. — l. M. u.J 



OPHIOGLOSSACEiE. 



Botrychium simplex TTitchcock, Amer. Jouru. Sci. vi. 103 (1823). Typo locality, 

 "in Conway, Massachusetts." 

 In the Sierra Nevada (Nos. 1032, 1703). 



SALVINIACEJE. 



Azolla caroliniana Willd. Sp. PL v. 541 (1810). Type locality, "in aqnis 

 Carolinte." 

 This minute aquatic occurred in the San Bernardino Valley (No. 24) ; in the Mohave 



'The plants from Isoetaceie to Marsiliacem inclusive have been determined by Pro- 

 fessor L. M. Underwood. 



