334 48. POLYPODIUM, EUPOLYPODIUM. 



Hab. Mexico. Judging from the description, P. Ehreriberglanum, Klotzsch, may be a 

 form of this with broader pinnae. 



185. P. pellucidum, Kaulf. ; rhizome stout, wide-creeping-, densely scaly ; st. 

 3-6 in. 1., rigid, erect, naked, glossy ; fr. 6-12 in. 1., 3-5 in. br., cut down nearly 

 or quite to the rachis into close blunt entire or subacute pinnce J-f in. br. ; 

 texture coriaceous ; rachis and both sides naked ; veinlets pellucid, subpinnate ; 

 sori large, prominent. Hk. Sp. 4. p. 206. 2nd Cent. t. 44. 



Hab. Sandwich Isles. P. myriocwpum, Hk. Ic. t. 84. is a form with pinnatifid pinnae. 

 Very like P. vulgare in habit, but the veins beautifully pellucid, distinct even in dried 

 specimens. 



186. P. vulgare, Linn. ; rhizome stout, the scales bright-ferruginous ; st. 2-4 

 in. L, firm, erect, stramineous ; fr. 6-12 in. 1., 3-6 in. br., cut down nearly or 

 quite to the rachis into close entire or slightly toothed usually blunt pinnce 

 g-rr in. br. ; texture heibaceous or subcoriaceous ; both sides naked; veinlets 

 pinnate ; sori large, uniserial. Hk. Sp. 5. p. 205. Brit. F. t. 22. 



Hab. Lapland, throughout Europe to the Azores, Madeira, Barbary States, Turkey in 

 Asia, and Japan ; Cape Colony. N. America Sitka, southward to California and the 

 north of Mexico. P. australe, Fee, is a large southern form ; P. cambricum, L., a form 

 with often deeply pinnatifid pinnae ; and P.falcatum, Kellogg (P. glycyrhiza, Eaton), a 

 Californian variety, with the pinnae finely toothed, and narrowed very gradually to an 

 acute point. 



ft Most of the pinnce distinctly separated at the base. Sp. 187-207. 



187. P. clavifer, Hk. ; st. densely tufted, very short ; fr. 4-5 in. 1., in. br., 

 pinnate throughout ; pinnce distant, linear-subulate, rigid, curved, the fertile 

 ones dilated at the point, which bears a large solitary sorus and is tipped with a 

 bristle ; rachis rigid, ciliated with deciduous bristlv'hairs ; texture coriaceous. 

 Hk. Sp. 4. p. 176. Grammitis, Hk. 2nd Cent. t. 5." 



Hab. Borneo, H. Low. A. very distinct plant, with the dilated apex of the pinnae 

 holding the solitary sorus like a spoon, thus falling under Calymmodon of Presl. 



188. P. tenuifolium, H. B. K. ; rhizome stout, clothed with reddish-brown 

 fibrillose scales ; st. 2-3 in. L, slender, naked, erect ; fr. 8-12 in. L, 1^-2 in. br., 

 cut down to the rachis into distant linear blunt entire or slightly crenated 

 pinnce 1 lin. br. ; texture papyraceo-herbaceous ; rachis and both sides naked ; 

 veinlets simple or rarely forked ; sori slightly immersed, in two rows of 6-10 each 

 to a pinna. Hk. Sp. 4. p. 192. 



Hab. West Indies and Columbia. Grisebach considers this P. Otites, Sw., but the 

 plant of Linnaeus is in part P. pectinatum. 



189. P. venulosum, Blume ; st. tufted, rigid, wiry, 1-3 in. 1., deciduously 

 villose ; fr. 12-18 in. 1., l-l in. br., cut down to the rachis throughout into close 

 entire horizontal pinnce 1 lin. br. ; texture subcoriaceous ; colour dark-green ; 

 rachis villose ; both sides naked ; midrib and simple veinlets raised ; sori copious, 

 immersed. Hk. Sp. 4. p. 223. Cryptosorus, Fee. 



Hab. Malay Isles and Japan. This and the preceding resemble P. pectinatum in habit, 

 but the pinnae are more distinctly separated. 



190. P. heteromorphum, Hk. & Gr. ; st. tufted, slender, wiry, naked ; fr. very 

 flaccid, pendent, simple or dichotomously forked or pinnate, with close irregular 

 pinnl. 12-18 in. 1., -| in. br. ; pinnce close, obovate or oblong, - in. 1., 1^ 2 lin. 

 br., entire or pinnatifid with short blunt lobes ; texture papyraceo-herbaceous ; 

 rachis and both sides densely clothed with soft spreading hairs ; veinlets of the 



