566 
6. C. tomentosa Link. Rootstock stout, scaly: stipes 5 to 18 em. long, covered 
with pale brown tomentum: fronds 2 to 4 dm, long, 3 to 8 cm. wide, everywhere, 
but especially beneath, tomentose with slender obscurely articulated hairs, tripin- 
nate; ultimate pinnules 1 to 1.5 mm. long, the terminal ones twice as large.—Texas 
(Lindheimer), Chenate Mountains, Presidio County (Nealley), Llano County (Re- 
verchon). Var. EaTont (Baker) Dav. differs from the type mainly in having the 
rachises scaly. (C. Katont Baker, )—Chenate Mountains, Presidio County (Nealley). 
** Fronds covered beneath with imbricated scales, not tomentose. 
7. C. Fendleri Hook. Stipes 5 to 12 em. long, chaffy with minute slender scales: 
fronds 6 to 10 cm. long, ovate-lanceolate, tripinnate; scales of primary rachis like 
those of the stipe, those of the secondary and ultimate rachises larger, broadly 
ovate, entire or nearly so, usually edged with white, imbricated and overlapping 
the subglobose ultimate segments, which are only 0.5 to 0.8 num. each way, and usually 
bear a single broad scale at their center,—Texas (Fendler), but not recently collected ; 
it should be found in the mountainous portions of western Texas, 
*** Under surface both tomentose and scaly, 
8. C. Lindheimeri Hook. Rootstock long, slender, chafty: stipes scattered, 1 to 
2 dm. long, dark brown: fronds & to 20 em. long, 3 to 5 cm. wide, triquadripin- 
nate; ultimate segments 0.5 mm. long, crowded; the upper surface white tomentose, 
the lower chaffy, passing into a tangled tomentum.—Texas (Lindheimer), but not 
recently collected. 
C. lanosa should be looked for in the northern and western portions, 
8. ASPLENIUM L. 
Sori oblong or linear, oblique, separate; indusium straight or rarely 
curved, opening toward the midrib.—Confined in this flora to small or 
medium sized rock ferns; elsewhere larger and coarser plants. 
§1. Veins free, simple or branched : indusia straight or slightly curved, attached to the upper 
side of the veins. —EUASPLENIUM. (Our species are simply pinnate.) 
* Fronds simply pinnate; pinne narrowed on both sides at base. 
1. A.trichomanes L. Stipes densely cespitose, short, polished: fronds 8 to 20 
em. long, 1 to 2 cm. wide; the pinne 15 to 30 pairs, nearly opposite, roundish-oblong 
or oval: sori 3 to 6 to each pinna.—Reported from Texas in Mr. Davenport’s list. 
** Fronds simply pinnate; pinne truncate or auricled on the upper side at base. 
2. A. parvulum Mart. & Gale. Stipes cespitose, 1 to 8 em, long, black: fronds 
1 to 2.5 dm. long, narrowed both ways from a little above the middle; pinnw more 
commonly opposite, oblong, obtuse, entire or crenulate, the lower gradually re- 
duced and somewhat triangular. (4. ebenewm Ait., var. minus.)—In woods, Houston 
(Hall), Gillespie County (Jermy), Chenate Mountains, Presidio County (Nealley). 
3. A. platyneuron (L.) Oakes. Stipes cespitose, chestnut-brown: fronds 1.5 to 
3.5 dm. long, 2 to3 cm. wide; the pinniw usually alternate, subfaleate, often auricu- 
late on lower as well as the upper side, the lower ones gradually reduced: sori often 
10 or 12 on each side the costa. (A. ebencum Ait.)—On the Rio Grande (Bigelow), 
Houston (Hall), Harrisburgh, Harris County (Joor), San Antonio (Mrs. Young). 
§ 2. Veins free: sori more or less curved, sometimes horseshoe-shaped, often crossing to the 
outer or lower side of a fruiting vein; fronds large bi-tripinnate. ATHYRIUM Roth. 
4, A. filix-foemina (Swz.) Bernh. Stipes usually clustered, 2 to 4 dm. long, 
straw-colored or brownish: fronds 4 to8 dm. long, broadly lanceolate to oblong- 
ovate, mostly bipinnate; pinnules oblong-lanceolate, pointed, more or less pinnately 
incised or serrate; very variable.—Texas (Wright). 
