ACROSTICHUM 



turn, 9; flaccidum, 8; gorgoneum, 11; lomarioides, 18; 

 muscosum, 3; nicotianaefolium, lU; osraundaceum, 19; 

 peltatum, 20; pilosum, 5; reticulatum, 10; scandens, 12; 

 simplex, 6 ; sorblf olium, 13 ; squamosum, 2 ; villosum, 1 ; 



ACROSTICHUM 



Lvs 



ugliout. 



imple, less than 2 in. wide; 

 {Uluphoglossum.) 

 B. Surface of lvs. densely scaly tin 

 c. Texture thin, flaccid. 



1. -7111680™, Swz. Fig. 27. Sterile lvs. 6-9 in. long ; 

 fertile lvs. scarcely more than half as large, both with 

 abundant slender, dark-brown scales. Mex. and W. Ind. 

 —Dwarf, variable. 



cc. Texture thick, leathery. 



2. squamdBum, Swz. Lvs. 6-12 in. long, the fertile 

 narrower, on longer stems ; both surfaces matted with 

 bright reddish brown linear or lanceolate scales. Tropics 

 of both hemispheres. 



3. musodsum, Swz. Sterile lvs. 6-12 in. long, fertile 

 much shorter ; upper surface slightly scaly, the lower 

 densely matted with ovate, rusty scales. Tropics of 

 both hemispheres. S. 1 ; 211. — Very distinct in habit. 



BB. Surface of lvs. slitihtly scaly. 



4. viscdsum, Swz. Sterile lvs. 6-12 in. long, narrowed 

 gradually at the base ; the fertile shorter, on longer 

 stems ; texture leathery, the amrfaces somewhat viscid. 

 Tropics of both hemispheres. 



5. pildsum, HBK. Lvs. flexuous. 6-8 in. long, %m. 

 wide, with tufts of star-like scales beneath; texture her- 

 baceous. Mex. to Columbia.— Chiefly of botanical in- 

 terest. 



BBB. Surface of lvs. not scaly; texture leathery. 

 D. Margins of lvs. thick, cartilaginous. 



6. simplex, Swz. Sterile lvs. 4-12 in. long, with a very 

 acute point, the lower portion gradually narrowed into a 

 short, somewhat margined stem. W. Ind. to Brazil. 



7. conldrme, Swz. Sterile lvs. 2-9 in. long, with a 

 bluntish point and wedge-shaped or spatulate base; fer- 

 tile lvs. narrower. Tropics of both hemispheres. 



DD. Margins of leaves not thickened. 



8. fUccidum, F^e. Sterile lvs. 6-12 in. long, with very 

 acute point, the lower portion gradually narrowed to the 

 short stem; fertile lvs. on a stem 3^ in. long. S. Amer. 

 — Of botanical interest only. 



AA. Ijvs. simple; veins uniting to form a network. 



B. Surface of lvs. densely clothed with narrow scales. 



[Hymenodium.) 



9. orinltum, Linn. Elephant-ear Fern. Lvs.l0-18in. 

 long, 4-8 in. wide, on densely scaly stems ; fertile lvs. 

 smaller, on shorter stems. "W.Indies. F.S. 9:936, as 

 H. crinitum. — Omit sand in potting, and avoid over- 

 watering. 



BB. Surface of lvs. mostly smooth, 6-15 in. long. 



10. reticulitum, Kaulf. Lvs. on distinct stems, witn 

 wedgetshaped bases, VA in. wide; veins forming copious 

 meshes. [Chrysodium.) Hawaiian Islands.-Of botani- 

 cal interest only. 



11. grorgrdneum, Kaulf. Lvs. tapering gradually down- 

 ward to the short stem, 2-3 in. wide ; veins forming 

 meshes only near the margin. {AconiopteHs,) Hawaiian 

 Isl. — Of little decorative value. 



AAA. Lvs. pinnate. 

 B. Ferns climbing with narrow, fertile pinnce. 



12. Bo4ndens, J. Smith. Rootstoek widely climbing : 

 lvs. 1-3 ft. long, with pinnie 4-8 in. long ; fertile pinnro 

 slender, 6-12 in. long; texture leathery. (Stenochla:na.) 

 India. S. 1: 224. — A vigorous grower and coarse feeder, 

 much used in cooler houses of large ferneries. 



13. sorbifdiium, Linn. Rootstoek climbing, often prick- 

 ly: lvs. 12-18 in. long, 6-12 in. wide, with close veins; fer- 

 tile pinnae 2-4 in. long, narrow. (Zomariopsis .) E. and 

 W. Ind. to Braz. 



BB. Ferns irith creeping rootstocks and scattered lvs. 



C. Veins united only near the margin; fertile lvs. bi- 



pinnate. 



14. cervlnum, Swz. Fig. 28. Lvs. 2-4 ft. long, with 

 pinnffi 4-9 in. long, 1-2 in. wide; fertile pinna slender. 



narrow, 4-8 in. long. {Olfers 

 Braz. S. 1:192. 

 cc. Veins forming meshes evei 

 1.5. ali^num, Swz. Sterile Iv- 

 with the upper pinnae decurrer 

 sinuati- or even incised ; ferti 

 row pinnfe, the iipper decurr 



Mex. and Cuba to 



rjnri'.', ( G i/in nnpferis.) 

 I-L' ff. L.:;. triangular, 

 and tluA|.nvi-r at least 



nicotianaefdlium, Swz. Sterile lvs. with 3-7 pinnae 

 h are 6-12 in. long and 2-3 in. wide, with nearly 

 e edges; fertile lvs. smaller, with 3-7 pinnffi 3-4 in. 

 , 1 in. wide. W, Ind. to Braz. 



roivns from 



17. aureum, Linn. Lvs. fertile only in the upper pinnae, 

 3-C ft. long, with pinnae 6-10 in. long, short stalked, 

 coriaceous. Fla. to Braz. and in the tropics of the old 

 world. S. 1: 187. -Strong-growing. One of the best. 

 Should be treated as an aquatic. 



18. lomarioides, Jenman. Sterile and fertile lvs. dis- 

 tinct, the sterile shorter and spreading, the fertile taller 

 and more erect in the center of the cluster; pinnae 9-14 

 in. long, almost sessile. Fla. to Braz. 



AAAA. Ivs.hlpiin, 



■ bipinnate ; ■ 

 'ra.) 





19. osmundaceum, Hook. Rootstoek wide, climbing, 

 with long, lim-ur scales : sterile lvs. 2-3 ft. long, the 

 lower pinnffi h-lU in. long, with numerous slightly 

 stalked segments; fertile lvs. tripinnate, with the lower 

 pinnffi 1-2 ft. long, 4-8 in. wide, with narrow, cylindrie 

 segments %-^/i in. long. W. Ind. to Braz. — Probably 

 the handsomest of the climbing kinds. 



AAAAA. I/vs. palmate from creeping rootstocks: 

 plants small. 



20. peltatum, Swz. Lvs. 1-2 in. each way on slender 

 stems, repeatedly forked into very narrow divisions; 

 fertile lvs. H-K in. wide, circular, or somewhat 2-lobed, 

 (Ehipidopteris.) Mex. and W. Ind. to Braz. — A delicate 

 and distinct plant, needing moisture all the year round. 



