60. ACROsncHUJL 405 



29. A. gquarrosum, Klotzsch ; rhizome wide-creeping, the scales dense, linear, 

 dark chesnnt-brown ; St. ^-\\ in. 1., slender, slightly scaly ; barren fr. 2-3 in. 1., 

 J in. br., nairo wed gradually to both ends ; texture herbaceous, the under surface 

 with scattered linear dark-diesnnt scales ; nans visible ; fertile fr. \ in. 1., j in. 

 br., the stem 2 in. L— JM. Sp. 5. p. 224. 



Hab. Columbia, Moritz, 319. — ^Most like the last, bat the scales different, and the 

 frond a drSerent shape. 



30. A. License, Hk. ; rhizome slender, wide-creeping, the scales adpressed, 

 lanceolate-acuminate, ferruginous ; St. 1-2 in. apart, 2-5 in. L, slender, slightly 

 scaly ; barren Jr. 2-4 in. 1., ^1^ in. br., the point blunt or acute, the base 

 narrowed suddenly or rather rounded ; texture snbcoriaceous ; under surface 

 with a few small linear dark chesnut-brown scales ; vans visible, not reaching 

 the edge ; fertile fr. much smaller than the other, on a longer stem. — Hk. Sp. 5. 

 p. 229. Ic. t. 657. . 



Hab. Mexico, along the Andes to Pern. 



31. A. heteromorpJmm, Klotzsch; rhizome filiform, wide-creeping, the scales 

 small, scattered, lanceolate-acuminate, brown ; St. 1-3 in. L, slender, slightly 

 scaly ; barren fr. lg-2 in. L, f-1 in. br., the point bluntish, the base rounded ; 

 texture thin but firm ; both sides scattered over with linear dark castaneous 

 scales ; reins consfpicuous, raised and darker in colour than the rest of the frond ; 

 fertile fr. much smaller and the st. much longer. — Hk. Sp. 5. p. 224. 



Hab. Colnmbia and Ecoador. 



32. A. Huacsaro, Ruiz ; rhizome woody, wide-creeping, the scales short, 

 black, fibrillose ; st. of barren frond 1 in. 1., clothed with small furfuraceous 

 scales ; barren fr. 3-4 in. 1., J-§ in. br., the point very blunt, the lower part 

 narrowed very gradually ; textm-e coriaceous ; the lower surface viscid, the upper 

 with scattered minute furfnraceons scales ; veira fine, close, indistinct ; fertile fr. 

 narrower than the other and the st. much longer. — ^A. Calaguala, Klotzsch. Hk. 

 Sp. 5. p. 218. A. Ruizianum, M'X/re. 



'Hah. Colnmbia to Pern. — XHstingnished from all the pieceding by its lignlate fronds 

 and very ooriaceons textnre. 



B. Barren fronds 6-18 inches long. Sp. 33-45. 



33. A. Gardrwrianum, Fee ; caud. woody, erect, the scales large, ovate-lan- 

 ceolate, pale-brown ;, st. tufted, 1-2 in. 1., firm, erect, densely clothed with 

 similar spreading scales; barren fr. 4-6 in. L, j-1 in. br., the point blunt, the 

 base rather rounded ; texture coriaceous ; upper surface nearly naked, lower 

 with small thickly scattered furfuraceous scales ; eems raised beneath, fine, 

 usually once forked ; fertile fr. narrower than the other, narrowed at the base 

 on a stem 6-8 in. L Hk. Sp. 5. p. 233. 



Hab. Brazil and "Veneznela.^ — Teztnre and general habit of conforme, bnt the scales 

 almost dense enongh to entitle It to a place in the next group. 



34. A. alpestre, Gardn. ; rhizome wide-creepin?, densely clothed with lan- 

 ceolate acuminate bright-chesnut scales ; st. of barren frond 4-5 in. 1., erect, 

 slightly scaly ; barren fr. 6 in. I., ^ in. br., bluntish at both ends ; texture sub- 

 coriaceous ; surface rather thickly scattered over with small linear bright- 

 chesnut scales ; neins distant, prominent ; barren fr. 2-3 in. 1., \ in. br., tlie 

 St. 1 ft. 1.— /Serf. PI. t. 25. A. eximinm, Mett. 



Hab. Organ Mountains, Brazil, Gardner, 6924 ; N. Granada, Lindig, 318. — ^Differs 

 from the next principally by its shorter fertile &ond ronnded at the base. 



