908 



FILICES (fern family.) 



Fm. 430. 



moses of nerves. Indusium 

 arising from near margin 

 of pinna, inner border free. 

 Fronds pinnate ; stipe con- 

 tinuous "with root-stock. 



B. Spicaiit, L. 71 



Fronds tufted, .5 to .0 



high, pinnate, of two 

 kinds; sterile with short 

 stipes, elongated, lanceolate^ 

 tapering toward base and 

 apex, pinnae entire, oblong- 

 lanceolate, often confluent at hase ; fertile few, icith long stipes, longer 

 than sterile, pinnte linear, clktant — June to August — Middle zone of 

 Lebanon, and northward. 



(a) Pinnffl of sterile frond ot Blechnum Spicant. {h) 

 Pinnae of fertile frond, after the marginal indusium has 

 been rolled back. 



Fig. 431. 



Sori linear, parallel, nearly at right angles 

 to the midrib, in pairs, one on the upper side of 

 one veinlet, the other on the lower side of the 

 next above, each with its linear indusium, the 

 two meeting at first in the middle, their margins 

 separating at maturity, and disclosing the spo- 

 rangia. Fronds glabrous. Stipe continuous 

 with root-stock, somewhat chaffy. 



1. S, vulgare, Sm. 2^ Fronds lanceolate- 

 Ungulate, .2 to .5 long, from a cordate base, a- 

 cute or obtuse, imdivided, entire or wavy-mar- 

 gined — April to July — Moist, shady rocks ; 

 common to alpine regions. ^'i^ ° driim vu^ga^e."'""'"' 



2. S, Hemioiiitis, Sm. 2]! Fronds cordate-ovate, at length oblong- 

 lanceolate, .1 to .25 long, often divaricate, or hastate, 2-4,-lobedt entire 

 or wavy-margined — April to July — Shady, moist rocks ; middle and 

 alpine zones of Lebanon ; Galilee. 



] 1 . ADI Al^TUM, L. Maiden's-Hair. 



Fig. 4^ 



Sori oblong, placed transversely on the sum- 

 mit of a lobe or tooth of the frond, attached to an 

 uninterrupted, vein-like receptacle, which con- 

 nects the tips of the forked and free veins, and 

 covered by a crescen tic indusium, continuous with 

 the margin, and opening inwardly. 



A. Capillus Veneris, L. If .1 to .5; 



root-stock creeping. Fronds clustered on long 



stipes, at first green, hairy, then black, glabrous, 



polished, tripinnate, pinnre and pinnules alternate, 



leaflets obliquely cuneate-obovate, destitute of /„) pinna of Adiantum 



main rib, with entire lateral margin and crenate Capiiius Veneris. (&) Seg- 



or truncate-lobed tip -March to December- -|",\fop?n"lnra^S 



Caves, and dripping rocks and walls ; everywhere. indusium. 



