Prare ХИ. А 
THE WALL RUE ОВ SPLEENWORT 
(ASPLENIUM RUTA-MURARIA). 
SPLENIUM, Linnaus, 
Clusters of Spore-cases linear, oblong or elongate, str 
t, attached along the inner or 
anterior side of the veins or venules, furnished with an indusium or membranous 
n 
cover. [m 
sium of the same form, ent 
ire or somewhat jag: 
sd on the margin, 
ig the inward side, or that towards the midvein or axis of venation. 
Veins disunited at their extremities, their branches (venules) simple or forked 
sometimes furcately branched without а midvein 
А. RUTAMTRARIA: fronds deltoid, bi-tri-pinnate ; pinnules obovate, or rhomboid, wed, 
shaped and entire at the baso, the anterior margins acute rounded or tru 
toothed ; sori linear, crowded, central : indusi 
EXPLANATION OF THE PLATE. 
Cawdez short, thick, tufted, scaly. Scales small, very dark brown, narrow lanceol: 
striato-reticulate, 
Fibres wiry, branched, 
Stipes as long as, or longer than the frond, smooth, dark purple at the base, green above. Rachis 
smooth, green. 
Vernation circinate 
Fronds one to six inches long, numerous; terminal, adherent to the caudex; deep green, sub-corineeons, 
often coriaceous, deltoid, bi-tri-pinnate ; when young, simple and reniform, or trifo 
iately pinnate, with 
roundish or sub-reniform leaflets, the latter st 
tile. Pinne alternate, Pinnules obovate or 
shomboidal, the base wedge-shaped, entire, 
and tapering into a more or loss distinct. petiole, the apex 
rounded, or acutely prolonged, or truncate, always toothed, with the teeth small and neatly equal. 
