38 6. ALSOPHILA. 



2g-3 in. 1., I in. w., oblong-acuminate, deeply nearly to the costa pinnatifid ; 

 lobes oblong, falcate, acute, entire, margins slightly reflexed ; sm^i copious, occu- 

 pying the space between the costule and the margin ; rachises and costce beneath 

 free from scales or pubescence. 



Hab. Chimborazo, alt. 2,500 ft., Spi-uce, n. 5740. — "A pretty Fern when growing," 

 Spnice. 



33. A. aterrima, Hk. ; st. castaneous, copiously aculeate, and at the base 

 sl'aL'gy with very long (1^ in.), dense, ferruginous, flexuose scales and fine 

 hairs ; fr. ample, thick, carnoso-coriaceous ; black above, a little paler and 

 chocolate-coloured beneath, villous above; racMs shagey ; costce and costules, espe- 

 cially beneath, clothed with deciduous, tawny, lanose hair ; prim, pinnce 1 ft. 

 and more 1., pinnl. 2-2\ in. 1., 4 lines w., deeply to the costa pinnatitid ; lobes 

 oblong, very obtuse, entire ; sori chiefly on the lower half of the lobes (about 6), 

 close to the costa, ferruginous. 



Hab. Near Tarapota, E. Peru, Spntce, n. 4713. — The blackest-looking species, whea 

 dry, 1 aiu acquainted with, and of a very firm and coriaceous texture. 



34. A. pruinata, Klf . ; unarmed ; st. densely lanigerous at the base ; fr. coria- 

 ceous, glaucous, bi-tripinnate ; prim, pinnce petioiate, 12-18 in. 1., ovato-lan- 

 ceolate ; pinnl. 3-4 in. 1., 1 in. w. ; j^etiolulate, from a broad base oblong- 

 acuininate, deeply pinnatifid, or again pinnate ; lobes or ult. jnnnl. ^ in. 1., 

 lanceolate, very acute, deeply or pinnatifidly and sharply serrated ; sori solitary, 

 near the costule, one to each lobule or serrature ; costo and costules beneath 

 often very hairy, and hairs mixed with the capsules on a small recept. — Hk. Sp. 

 l.p.47. Poloyp. griseum, Schk. Fil. t. 25. Trichosorus glaucescens, densus 

 et frigidus, Liebm. Lophosorus, Pr. 



Hab. Tropical America and W. Ind., extending as far south as Chili ; Juan Fernandez. 



35. A. frigida, Karst. ; " caucl. not lofty ; st. and rachises clothed sparingly 

 with deciduous tomentum and, especially at the base, muricated ; fr. ovato-lan- 

 ceolate, tripinnate, coriaceous ; p>riin. and second, pinnae from a broad base 

 gradually narrower and acuminated ; pinnl. \ in. 1., oblong, more or less adnate at 

 the base, densely squamose beneath, pinnatifid ; the lobes falcate, obtuse, crenate, 

 separated liy a very narrow, acute sinus, penniveined ; tiie margin revolute ; 

 veins simple or forked, the lower ones on the middle of the back or in the fork 

 soriferous ; recept. semigloljose, pilose." — Karst. Fl. (Jolumb. t. SO. 



Hab. Andes of Bogota, alt. 15,300 ft., Karsten. 



36. A. Mexicana, Mart. ; "/n tripinnatifi do-partite, sparingly hirsute on both 

 sides ; st. and rachis rough with hairs and furnished with scales varying in size ; 

 pinnae linear-oblong, acute ; pinnl. linear-acuminate, deeply pinnatifid ; ultimate 

 lobes obliquely and broadly ovate, entire or emarginato-bidentate ; sori on each 

 lobe near the rachis 2-2,."— Mart. Cr. Bras. p. 70. t. 45. Hk. *S>?. l.p. 47. 



Hab. Llexico. 



37. A. mj/ostiroides, Liebm.; " caud. 10-16 ft. 1., 3-4 in. diam. ; /r. ample; 

 2niino3 patulous, petioiate, elongato-lanceol. H-2 ft. 1. ; pinnl. divergent, 3-3^ in. 

 J., \ in. w., eloiigato-lanceolate, long-acuminate, acute, deeply pinnatifid ; lobes 

 from a dilated base linear-lanceolate, falcate, rather obtuse, crenulato-falcate ; 

 margins a little revolute, the sinuses angled ; the ajjex of the pinnl. contrac;ted, 

 •|-1 in. ]., 1-2 lines w., crenated ; costa on both sides appresso-pilose ; sori 

 numerous on each lobe, at length confluent; st. 1 ft, 1,, 1 in. thick, aculeolate 

 with straight prickles." — Liebm. F. Mex. p. 134. 



Hab. Mexico, on mountains, alt. 2,400 ft., Z/etHiann. — The author seems to allude to an 

 affinity with Als. armata, Pr. I possess cojiious specimens from Dr. Liebmann gathered 



