500 FERN FAMILY. 



26. LYGODIUM, CLIMBING FERN. (Name from a Greek word, 

 meaning flexible, alluding to the twining and climbing fronds.) Not 

 many species ; several species are cult, in choice collections. 



L. palmatum, Swartz. HARTFORD FERN. Low shady woods, local or 

 rare ; smooth, slender, and delicate, 2-4 high, entangled among herbs ; 

 pinnae roundish, 12"-18" wide, deeply heart-shaped at the base, palmately 

 5-7-lobed, upper ones decompound and fertile. 



L. Jap6nicum, Swartz. Conservatory plant from Japan ; climbing 10- 

 12 high, smooth; pinnae ovate, 5'-9' long, bipinnate, divisions ovate- 

 lanceolate, often halberd-shaped ; divisions of the upper pinnae bordered 

 with narrow fertile lobes. 



27. ANEIMIA. (Greek, meaning -without covering, alluding to the 

 naked spore cases ; by others said to mean bloodless.) Mainly tropi- 

 cal. 



A. Phyllitidis, Swartz. Cult, from S. Amer.; 12'-18' high ; has the two 

 lower pinnae long-stalked, narrowly elongated, 3-4-pinnate, fertile ; middle 

 portion of the frond sterile, simply pinnate ; pinnae lanceolate, finely ser- 

 rate ; veins reticulated. 



A. adiantoldes, Swartz. S. Fla., and cult.; with lower pinnae as in the 

 last ; middle portion sterile, 2-3-pinnate ; pinnse long-pointed ; divisions 

 obovate-wedge-shaped, entire or toothed at the end, with free veins fork- 

 ing from the base. 



28. SCHIZJEA. (Name from the Greek verb which means to split, 

 referring to the many -forked fronds of certain tropical species.) 



S. pusflla, Pursh. Wet sand, in pine woods of N. J. (also Nova Scotia 

 and Newfoundland); sterile fronds very slender, flattened, simple and 

 linear, curled up ; fertile ones similar, but straight, 2'-3' high, bearing at 

 the top the fertile portion, 2"-3" long, composed of about 6 pairs of 

 minute pinnae. (Lessons, Figs. 505-607.) 



29. OSMTJNDA, FLOWERING FERN. (Osmundr, Saxon name 

 of Thor, the Celtic divinity.) Species very few, fruiting in spring or 

 early summer. 



* Fertile pinnae at the top of the frond, like a panicle. 



O. regalis. Linn. ROYAL FERN. Common in swamps and wet woods, 

 fruiting later than the others ; fronds truly bipinnate ; pinnules oval or 

 oblong, serrulate, obtuse, sometimes a little heart-shaped at base, or slightly 

 auricled on one side ; spore cases light brown. 



* * Fertile pinnae in the middle or near the base of the leafy frond. 



O. Claytoniana, Linn. Wet places, common ; sterile fronds much 

 like those of the next, but more obtuse at the top ; fertile ones with 2-4 

 pairs of contracted and fertile blackish pinnae just below the middle, 

 but otherwise like the sterile. 



* * * Fertile pinnce on distinct not leafy fronds. 



O. cinnamdmea, Linn. CINNAMON >FERX. Swamps, common ; sterile 

 fronds 2-5 high, broadly lanceolate, pinnate with many lanceolate, 

 deeply pinnatifid pinnae ; fertile ones much shorter, at first woolly, soon 

 withering ; fructification bright cinnamon color. 



