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■RUTA-MURARIA.L, KiÇ 2 ASPLÎÎN 7 ■ f.; :;KF':';77'
FERNS OF NORTH AMERICA.
P l a t e XV. — F ig . i .
A S P L E N IU M R U T A -M U R A R IA , L in n æ u s .
Waü-Rue.
A s p l e n iu m R u t a -m u e a r i a : ~ Plants of small size; rootstocks
short, creeping, entangled ; stalks tufted, one to three inches
long, green, brownish at the base; fronds evergreen, sub-coriaceous,
smooth, nearly as long as the stalks, deltoid-ovate in outline,
laxly bi-tripinnate at the base, pinnate towards the apex, the
divisions alternate; ultimate segments few, stalked, two to five
lines long, varying from narrowly cuneate to broadly rhomboid
or even roundish-obovate, the apices or outer margins crenate,
toothed, or deeply incised; mid-vein none, veinlets free, flabellately
forking ; sori linear-oblong, two to four to a segment, confluent
when ripe; indusium very delicate, having a ciliated
margin.
AspUnmm Rnta-muraria, L in n æ u s , Sp. Pl., p. 1 541. — S w a e t z , Syn. Fil.,
p. 85. — W il ld en ow , Sp. PL, v., p. 3 4 1. — S ch k u h r , Krypt. Gew.,
p. 75. t. 80, (5. — M e t t e n iu s , über Asplemum, p. 143. — H o o k e r ,
Sp. F it , iv., p. 176. — M oo r e , Nat. Pr. Brit. Ferns, t. 4 1, A .—
H e u f l e r , Aspl. Sp. Eur., p. 329. — M il d e , Fil. Eur. et Atl., p. 76.
— M ich a u x , FI. Bor. Am., ii.. p. 266.— P u r sh , FI. Am. Sept.,
p. 667. — B ig e low , FI. Boston., ed. iii., p. 422. — D a r l in g to n , FI.
Cest., ed. iii., p. 393. — T o r r e y , FI. New York, ii., p. 492. — G r a y ,
Manual, ed. omn. — E aton, in Chapm. Fk, p. 593.
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