48. POLYPODIUM, PHYMATODES. 357 



Hab. Samar, Philippines, Cuming, 323 (in part). This and the three preceding agree 

 with Nipliobolus in the coating of the under surface, but with Phymatodes in venation. 



B. /Substance thinner, and veins distinct. Sp. 319-329. 



319. P. (Phym.) Swartzii, Baker; rhizome wide-creeping, slender, the scales 

 linear, ferruginous ; st. ^-1 in. 1., slender, naked ; fr. nearly or quite uniform^ 

 2-4 in. 1., ^-1 in. br., narrowed gradually towards both ends, the edge entire 

 or slighly lobed ; texture subcoriactous ; both sides naked ; areolce fine, copious, 

 irregular ; sori uniserial on free veinlets. P. serpens, Sw. Hk. Sp. 5. p. 35. 

 (non Forst.}. Anapeltis, J. Sm. 



Hab. West Indies and Cayenne. P. runcinatum, Desv., is the sinuato-crenate form. 



320. P. (Phym.) zosterceforme, Wall. ; rhizome wide-creeping, slender, scale- 

 less ; st. \-\ in. 1., very slender ; fr. 4-6 in. ]., 2 lin. br., the edge entire, the 

 base narrowed gradually ; texture herbaceous ; colour dark-green, both sides 

 naked ; veinlets distinct, no main veins ; areolce in 2-3 irregular rows with no 

 free veinlets ; sori distant in rows close to the midrib. Hk. Sp. 5. p. 64. 



Hab. Tenasserim, Wattich, 280 ; Moulmein, Parish, 191. 



321. P. (Phym.) stigmaticum, Presl ; rhizome slender, wide-creeping, fibrillose ; 

 fr. subsessile, uniform, 4-5 in. 1., ^-| in. br., entire, narrowed gradually towards 



both ends ; texture subcoriaceous ; both sides naked ; main veins not reaching to 

 the edge ; areolce fine, copious, with distinct free veinlets ; sori uniserial, placed 

 on the connected veinlets. Hk. Sp. 5. p. 36. Anapeltis venosa, J. Sin. 



Hab. Columbia. Very near the next species, but the texture thinner, and free 

 veinlets copious and distinct. 



322. P. (Phym.) lycopodioides, L. ; rhizome wide-creeping, firm, the scales 

 lanceolate-subulate, ferruginous ; fr. distant, dimorphous, short-stalked or 

 sessile, the barren ones 2-4 in. 1., ^-1 in. br., entire, often blunt, narrowed 

 gradually at the base, the fertile ones longer and narrower ; texture coriaceous ; 

 both sides naked ; areolce in several rows, that containing the uniserial sori the 

 largest, the free veinlets few and inconspicuous. /3, P. salicifolium, Willd. ; fr. 

 narrower, the sterile and fertile ones nearly or quite uniform. Hk. Sp. 5. p. 34. 



Hab. Cuba and Mexico fco Peru and South Brazil, Sandwich Isles, Java, Angola, 

 Mauritius, Natal, Guinea Coast. More rigid and coriaceous in texture than the rest of 

 the group, but the veinlets raised and usually quite distinct. 



323. P. (Phym.) fusco-punctatum, Hk. ; rhizome woody, wide-creeping, the 

 scales ovate, bright-brown ; fr. subsessile, 6-9 in. L, the point acute, the base 

 narrowed very gradually, the edge entire ; texture subcoriaceous ; both sides 

 naked, with abundant fine dark-brown points ; areolce very distinct, with no 

 main veins and a few included veinlets ; sori large, uniserial. medial. Hk. Sp. 5. 

 p. 69. t. 285. A, 



Hab. Chimborazo, Spruce, 5734. 



324. P. (Phym.) Mackenii, Baker ; rhizome epigaeous, J in. thick, very wide- 

 creeping, the scales lanceolate-acuminate, pale reddish-brown \fr. distant, nearly 

 sessile, 4-5 in. 1., f-f in. br., the point subacute, the edge entire, the base 

 narrowed rather suddenly ; texture subcoriaceous ; both sides quite naked ; 

 areolce in one large central row which contains the sori, and one of smaller ones 

 on each side, with free veinlets ; sori round, in a single row rather nearer the 

 midrib than the edge. 



Hab. Natal, McKen, 22. Closely allied to the two following species, but firmer in 

 texture, with a stouter rhizome, and the venation not nearly so complicated. 



