680 FILIOES. 



37. ASPLENIUM, L. 



Sori Iming oUique veins above their base and below tlieir summit : indusium lateral, in- 

 serted info the fertile vein, and deaurrent along it. — Veins usually free. 



A. Purdiisi, Hoolc., 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 otlong (-half -oval), most single. 

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



186. A. serratum, L. Leaf lanceolate-oblong, stnahie: orsuhentire: 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. Til. t. 124. Schk. Crypt, t. 64. — 

 Leaves clustered, rigid, l'-3' long, 2"-4" (-1" broad.— Hab. Jamaica (Sw.) ; S. Vincent !, 

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



187. A. marginatum, i. Leaf finnatisect: segments large, oblong-lanceolate, sxih- 

 entire, subcordate at the base : midrib rounded beneath : veins Z-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. Pil. t. 106. — Hemidictyon, Pr. 

 — 4'-8' high, snbmembranaceous ; segments I'^l^' long, 3"-4" broad, distantly sessile. — 

 Hab. Jamaica !, Pd. ; S. Vincent !, Ouild. ; Trinidad (/. Sm.) ; [Cuba ! to Fi-encb islands !, 

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



§ 3. Most veins forked or dichotomous, 



* Leaf pinnatisect ; indusium glabrous, 



■j- Son distant from the midrib, diterging s leaf herbaceous. 



■ 188. A. salicifolium, Sw. {es; Kze., Mett., Jlook., non L.). Leaf pinnatisect : seg- 

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

 cuneate at the base, lowest conform : rachis flaitish, wingless : v^ins dichotomous, branches 

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

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

 exclude Liunseus'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- 

 riannm, Z«e. /—Segments 3"-6" long, 8"'-12"'(-6"') broad; sori 8"'-6'" long.— Hab. 

 Jamaica (Sw) ; [Cuba ! to Portorico? Panama ! to Brazil !]. 



189. A. cultrifolium, L. Leaf pinnatisect : segments lanceolate-aaaminate, 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. Fit. t. 59. — Segments variable, -thickish in dry, 

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



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

 — A. riparium/'ise^m. ex Hook. Spec. t. 169./. 1-3. A. anriculatum, Eat. PL Wr. 1026. 



iS. auriculatum, Sw., Hook. ! Segments' firm-herbaceous, with a large, roundish auricle,; 

 petiole pale or tardily becoming pale-browii. — Hook. Spec. t. 171. — A. cultrifolium, Sieb. 

 Mart. 365 (A. salicifolium, Kaulf). A. falx, Besv., Kze. I A. semicordatnm, Radd. 

 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. I (Diplazium, Moore .'). 

 — ^Leaf often pinnatifid at the summit. 



' Hab. Jamaica!, Upright (7) ; Dominica!, Imr. Ifi), S. Vincent!, Guild. {$) ; Trinidad!, 

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



A. sanguinolentum, Kze. (syn. A. anisophyllum, var. americanum. Eat. PI. Wr. Cub. 

 845), 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 I and in Venezuela ! (A. salicifolium, Moritz !]. 



