680 FILICES. 



37. ASPLENIUM, L. 



Sori lining oblique veins above their base and below their summit : indusium lateral, in- 

 serted into the fertile vein, and decurrent along it. — Veins usually free. 



A. Purdian, Hook., is to be excluded from the "West Indian Flora : from the date of 

 his label it results, that this Fern was collected in Venezuela. 



Sect. 1. Eitasplenium. — Sori linear or oblong (-half-oval), most single. 

 § 1. Veins costate, 2-partite-simple or anastomosing beyond the sorus. 



186. A. serratum, L. Leaf lanceolate-oblong, serrulate orsubentire: midrib keeled be- 

 neath : veins 2-partite (-simple) : branches parallel, free, terminated near the margin with 

 a thickened summit (rarely a few anastomosing) : petiole stout, pale ; sori linear, produced 

 to near the midrib, distant from the margin. — Plum. Fil. t. 124. Schk. Crypt. I. 64. — 

 Leaves clustered, rigid, l'-8' long, 2"-4" (-1" broad.— Hab. Jamaica {Sw.) ; S. Viucent !, 

 Guild., on trees, rare, in the mountains ; [Cuba ! to Brazil ! ; Pacific islands]. 



187- A. marginatum, L. Leaf pinnatisect : segments large, oblong-lanceolate, sub- 

 entire, subcordate at the base : midrib rounded beneath : veins 2-partite or simple, branches 

 parallel, areolate beyond the sorus, and connected by a juxtamarginal arch : petiole long, 

 pale ; sori linear, often produced to near the midrib. — Plum. Fil. t. 106. — Hemidictyon, Pr. 

 — 4-8' high, submembranaceous ; segments 1'-1V long, 3 "-4" broad, distantly sessile. — 

 Hab. Jamaica !, Pd. ,- S. Vincent !, Guild. ; Trinidad (/. Sm.) ; [Cuba ! to French islands !, 

 Sieb. Marl. 248 ; Panama ! to Peru ! and Brazil !]. 



§ 2. Most veins forked or dichotomous. 



* Leaf pinnatisect ; indusium glabrous. 



f Sori distant from the midrib, diverging ; leaf herbaceous. 



188. A. salicifolium, Sw. {ex Kze., Mett., Hook., non L.). Leaf pinnatisect : seg- 

 ments lanceolate-acuminate, remotely serrulate or entire, upward produced and obliquely 

 cuneate at the base, lowest conform: rachis faltish, wingless: veins dichotomous, branches 

 terminated near the margin with an equal, slender summit : petiole pale ; sori linear, in- 

 termediate between the margin and midrib. — Metten. Asplen. t. 4. f. 14 : a segment. I 

 exclude Linnseus's synonym, as Plumier's figure (t. 60) is distinguished by the sori pro- 

 duced to near the midrib, as in A. erosum, Hook. — A. integerrimum, Sprenq. A. Kapple- 

 rianum, Kze. /—Segments 3"-6" long, 8"'-12'"(-6'") broad; sori 8"'-6''' long.— Hab. 

 Jamaica (Sic.) ; [Cuba ! to Portorico ; Pauama ! to Brazil !]. 



189. A. cultrifolium, L. Leaf pinnatisect : segments lanceolate-acuminate, serrate 

 or crenate-serrate, upward auricled or produced, and dimidiate-truncate at the base, lowest 

 conform: rhachis margined: veins dichotomous, branches terminated near the margin with 

 a thickened summit : petiole pale or becoming brown ; sori linear, distant from the midrib 

 and more so from the margin. — Plum. Fil. t. 59. — Segments variable, thickish in dry, 

 flaccid in moist situations, 3"-l" long, 6'" broad above the auricle. 



o. Segments flaccid-herbaceous, with a deltoid auricle : petiole becoming brown or hlacK. 

 —A. riparium, Liebm. ex Hook. Spec. t. 169./. 1-3. A. auriculatum, Eat. PL Wr. 102o. 



0. auriculatum, Sw., Hook. ! Segments firm-herbaceous, with a large, roundish auricle ■ 

 petiole pale or tardily becoming pale-brown. — Hook. Spec. t. 171. — A. cultrifolium, Sieo. 

 Mart. 365 (A. salicifolium, Kaulf). A. falx, Desv., Kze.! A. semicordatum, RaM. 

 A. gibbosum, Fee. . , 



y. Moorianum. Segments firm-herbaceous, upwards angled at the base or nearly devoid 

 of an auricle : petiole becoming brown below. — A. cultrifolium, Hook. ! (Diplazium, Moore . )■ 

 — Leaf often pinnatifid at the summit. . 



Hab. Jamaica!, Wright (7); Dominica!, Imr. ()8), S. Vincent!, Guild. (0); Trinidad!, 

 Pr. (7) ! [Cuba! and Mexico ! to Brazil!]. 



A. sanguinolentum, Kze. (syn. A. anisophyllum, var. americanum, Eat. PI. Wr. ^ UD - 

 815), distinguished from A. cultrifolium, L., by oblong (3"' long) sori, tumid indusia, and 

 the segments oblique at the base, but devoid of large auricles, grows probably in the British 

 islands, as it occurs in Cuba ! and in Venezuela ! (A. salicifolium; Moritz !]. 



