PILICES. (FERNS.) 593 



the frond. Indusium fixed to the outer margin of the fruitful veinlet, free and 

 opening on the side next the midrib. Fronds pinnatifid or pinnate. (Named 

 for S. Woodward, an English naturalist of the last century.) 



1. WOODWARDIA PROPEB. Indusium strongly vaulted : veins (at least of 

 the sterile frond) with several rows of reticulations. 



1. W. angllStifolia, Smith. Sterile fronds (1 high, thin, bright green) 

 deeply pinnatifid, with lanceolate serrulate divisions ; the fertile simply pinnate, 

 with contracted linear pinnae (2" -4" wide), its single row of cross veins bearing 

 the fruit-dots (' long) as near the margins as the midrib. (W. onocleoides, 

 Willd.) Bogs, Massachusetts, near the coast, to Virginia, and southward: 

 rare. Aug. 



4 2. DO6DIA, R. Brown. Indusium flattish: cross veins only one or two rows. 



2. W. Virginica, Willd. Fertile and sterile fronds similar (2 high), 

 pinnate ; the pinnae lanceolate, pinnatifid, with numerous oblong lobes ; fruit- 

 dots contiguous or soon confluent, forming a line on each side of the midrib, 

 both of the pinnae and of the lobes. Swamps, Vermont and New York to Vir- 

 ginia, and southward. July. 



8. CAMPTOS6RUS, Link. WALKING-LEAF. (Tab. 11.) 



Fruit-dots linear or oval-oblong, irregularly scattered on the reticulated veins 

 of the simple frond, variously diverging, inclined (especially those of the second- 

 ary reticulations) to approximate in pairs by the side at which the indusium 

 opens, or to become confluent at their ends, forming crooked lines or angles 

 (whence the name, from Ketywrroy, bent, and (rapos , for fruit-dot). 



1. C. ThizopliyllllS, Link. (Asplenium rhizophyllum, L. Antigram- 

 ma, /. Smith, Torr. Also C. rumicifolius, Link.) Shaded rocks, W. New Eng- 

 land to Wisconsin, and southward j rare. July. Fronds evergreen, growing 

 in tufts, spreading or procumbent (4' - 9' long), lanceolate from an auricled-heart- 

 shaped base, tapering above into a slender prolongation like a runner, which 

 often roots at the apex and gives rise to new fronds, and these in turn to others ; 

 hence the popular name. A singular form is found at Mount Joy, Penn., by 

 Mr. Stauffer, having roundish fruit-dots and inconspicuous veins. 



9. SCOL.OPENDRIUM, L. HART'S-TONGUE. (Tab. 11.) 



Fruit-dots linear, elongated, almost at right angles with the midrib of the sim- 

 ple frond, borne in pairs on the contiguous sides of the two parallel forks of the 

 straight free veins, one on each, but so confluent side by side as to appear like 

 one, opening by an apparently double indusium down the middle. (The anr\ent 

 Greek name, so called because the numerous parallel lines of fruit resemble the 

 feet of the centipede, or Scolopendra.) 



1. 'S. oIIiciiuYruin, Swartz. Frond oblong-lanceolate from an auricled- 

 heart-shaped base, entire or wavy-margined (V -18' long, 1'- 2' wide), bright 

 green. Limestone rocks, in a deep ravine at Chittenango Creek, below the 

 Falls, where it abounds, and also, perhaps, in some other places in W. New 

 York ("near Canandaigua," Nuttatt). (Eu.) 

 50* 



