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BOTANY. 



233 



EQUISETACE^,* 



Equisetum arvense, Linn. ; PursJi^ Fl. 2, p. 651 ; Braun & Engetm. in SilL Jour. 46, 'p. 83 ; 

 Torr. Fl. N. Yorhy 2, p. 480. Near tlie Mimbres, New Mexico ; Thurher. Small sterile 

 specimens. 



Equisetum l^vigatum, Braun (fe Engelm. L c. Banks of the Rio Grande, near El Paso, and 

 near the Coper Mines. 



Equisetum robustum, Braun & Engehi. Z. c. Banks of the Rio Grande. 



EILICES. 



WooDWARDiA RABiCANS, Willd. Sp. 5^ p. 418 J Hook. & Am, Bot. Beech, p. 162 dc 405. W. 

 Chamissoi, Brack. Ferns of the U. S. Expl. Exped. p. 138. Between San Diego and the 

 Colorado ; Schoti. 



Adiantum Capillus- veneris, Linn.; Hook. Sp. Fil. 2, p. 36. From San Antonio to the Rio 

 Grande, and northward to New Mexico ; common along running streams. 



Kaulf. Enurn. p. 207 ; Hook. I. c, p. 43. California, Texas ; Wr 



(No. 2123.) 



Var. hirsutuMj Hook. I. c. p. 43, t. 75, -B, A. pilosum, Fee^ Gen. Fil. p. 118. Rocks near 

 the mouth of the Pecos ; Bigeloiv. 



Ptekis aquilina, Linn. Var. fi. lanuginosa, Hook, Fl. Bor. — Am. 2, p. 263 ; Brack. I. c. p. 

 119. P. lanuginosa, Hook. <& Am. Bot. Beech, p. 405 ; Agardh, Gen. Pterid. 51. f Between 



■ 



San Diego and the Colorado ; Schott. 



pELLiEA PLExuosA, j&{;i^. FIL Sp. p. 60 J Fee, Gen. Fil. p. 129. AWomxvi^ ^ Kunze ; Schk. 

 Fil. Supp. lyp. 46, t. 23. Pteris, Hook. Ic. PI. 2, t. 119. On running streams near the Rio 

 Grande, and along the San Pedro and the Gila. (No. 825^ Wright.) 



PELLiEA andromed^folia, Fec^ I. c. Allosorus andromedfefolius, Kunze^ Anal. Pterid. p. 18, 

 t. 11. Pteris, Kaulf. Enum. Fil. p. 188. Between San Diego and the Colorado ; Schott. 



Pell^a pulchella^ Fee, I. c. 



1. 



Mex 



ellus, Mart. & Gal. Fil. Mex. p. 47, t. 10, fig. 

 From Howard's Springs and the Pecos to the 



San Pedro and the Waterholes ; Bigehia, Schott. (No. 824^ Wright.) 



Pell^amucronata. Allosorus mucronatus, D. (7. Eaton in Sill. Jour. (ser. 2,) 64,^. 138 ; Torr. 

 Bot. Whippl. Bep. p. 160. Pelli«a Wrightiana, longimucronata^ & Ornithopus, Hook. Sp. 

 Fil. 2, p. — , t. 115 & 116, (ined.) On rocks from the Rio Grande, westward, to the Colorado 

 and California. (No. 2130 and 2131, Wright.) This fern varies in height from two inches to 

 over a foot. In its simplest state the upper pinnse are trifoliate, and the lower quino[uefoliate ; 

 from this it varies to a state in which the secondary rachis bear numerous and minute trifoliate 



r 



pinnules. Some of the forms resemble P. ternifolia, Link. I. c, (Pteris ternifolia, Hook, dt 



Grev. Ic. Fil. 2, t. 126,) 



cuneate sterile pinnules. 

 i^ Pell^a atropurpurea, Link. I. c. 



Willd. Sp. PI 5, p. 375 



2, p. 668. Platyloma atropurpurea, J. Smith; Torr. Fl. New Torky 2, p. 488. Allosorus 



Ptei 



Along the Mimbres, 



Mexico 



* This and the following orders of Acrogens were elaborated by Daniel C. Eaton, esq., of the Scientific School of Yale College. 

 The Ora *Bes will be the subject of a separate report, to be published in the Smithsonian contributions. 



30 k 



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