BOTANY OF DELAWARE COUNTY. 



431 



microcarpon, Muhl. 

 dicliotoimini, L. 



viseidum, Kll. On Tinicum, abun- 

 dant. 

 erus-</alli, L. 

 depauperatum, Muhl. 

 Srtaria. 



glauca, Beauv. (Fox-tail Grass.) 

 viridis, Beauv. 



Cenchrus, L. 



tribuloides, L. (Bur-Grass.) Oo 

 the sandy grounds of Tinicum. 

 Andropooon, L. 



furcatus, Muhl. 



Virginicus, L. 



macrourus, Michx. 

 Sorghum, Pers. 



nutans, Gray. (Wood-Grass.) 



SERIES II. 



CRYPTOGAMOUS OR FLOWERLESS PLANTS. 

 CLASS IIL— ACROGENS. 



ORDER EQUISETACE.E. 

 Equisbtum. 



arvense, L. 



sylvaiicum, L. 



byemale, L. (Scouring Rush.) 



ORDER FILICES. (Ferns.) 



POLYPODIDM, L. 



vulgare, L. 



hexagonopterum, Michx. 

 Ptbris, L. 



aquilina, L. 

 Adiantum, L. 



pedatum, L. (Maiden's Hair.) 

 Cheilanthes, Swartz. 



vestita, Willd. 

 WOODWARDIA, Smith. 



angustifolia, Smith. On Tinicum. 

 Camptosorus, Link. 



rhizophyllus, Link. (Walking- 

 leaf. 



ASPLKNICM, L. 



Trichomanes, L. (Castle Rock.) 



ebeneum, Alton. 



thelypteroides, Michx. 



Filix-foemina, R. Br. 

 DiCKSONiA, L'Her. 



punctilobula, Hook. 

 WooDSiA, R. Brown. 



obtusa, Tor. 

 AspiDiOM, Swartz. 



Tbelypteris. Swartz. 



Noveboracense, Willd. 



spinulosum, Swartz. 



cristatum, Swartz. 



marginale, Swartz. 



acrostichoides, Swartz. 

 Onoclea, L. 



sensibilis, L. (Sensitive Fern,) 



OSMCNDA, L. 



regalis, L. (Spectabilis.) 

 Claytoniana, L. 

 cinamomea, L. 



BoTRTCHiuM, Swartz. 



lunarioides, Swartz. 



virginicum, Swartz. 

 Ophioglossum, L. 



vulgatum, L. (Adder's tongue.) 



ORDER LYCOPODIACEiE. 



Lycopodidm, L. 



lucidulum, Michx. 



inundatum, L. On Tinicum. 



annotinum ? L. 



dendroideum, Michx. (Ground- 

 Pine.) 



complanatum, L. 



clavatum, L. 

 Selagikella, Beauv. 



apus, Spring. 



ORDER HYDROPTERIDES. 



Isoetes, L. 



riparia, Engelm. Gravelly banks 

 of the Delaware. 



lacustris. Darby township. Dr. 

 Thos. P. James, of Philadelphia, 

 says the L Engehnanni also 

 grows in Delaware County. 



ORDER MUSCL— Mosses. 



Sphagnum, Dill. 



acutifolium, Ehrh. 



cuspidatum, Ehrh. 

 Phascum, L. 



crassinervium, Schwaegr. 



cohaerens, Hedw. 



muticum, Schreb. 



cuspidatum, Schreb. 



alternifolium, Brid. 



Sullivantii, Schimp. 

 Bruchia, Schwaegr. 



flexuosa, Schwaegr. 

 Weisia, Hedw. 



viridula, Brid. 



