. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 17. PELLAEA Link, Fil. Hort. Berol. 59. 1841. Rock-loving small or medium-sized ferns, with nearly uniform leaves, the blades 1-3-pinnate, smooth, the fertile divisions commonly narrower than the sterile. Sori roundish or elongate, on the free veins, usually confluent in a submarginal line. Indusium formed by the reflexed margins of the segments. [Greek, alludi
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 17. PELLAEA Link, Fil. Hort. Berol. 59. 1841. Rock-loving small or medium-sized ferns, with nearly uniform leaves, the blades 1-3-pinnate, smooth, the fertile divisions commonly narrower than the sterile. Sori roundish or elongate, on the free veins, usually confluent in a submarginal line. Indusium formed by the reflexed margins of the segments. [Greek, alluding to the dark-colored stipes.] About 50 to 60 species of wide geographic distribution. Besides the following several occur in the western and southwestern United States. Type species: Pellaea atropurpurea (L.) Link. Blades pinnate or 2-pinnate with large pinnules. 1. P. atropurpurea. Blades small, 3-pinnate, the pinnules narrow. 2. P. densa. i. Pellaea atropurpurea (L.) Link. Purple-stemmed Cliff-brake. Fig. 76. Pteris atropurpurea L. Sp. PI. 1076. 1753. Pellaea atropurpurea Link, Fil. Hort. Berol. 59. 1841. P. glabella Mett. ; Kuhn, Linnaea 36: 87'. 1869. Rootstock short, densely clothed with long- attenuate rusty scales. Stipes tufted, 2'-%' long, dark purple, smooth, or, with the rachis, more or less pubescent with hair-like chaff; blades coriaceous, lanceolate, ovate-lanceolate or deltoid-ovate, 4'-i2' long, 2'-6' wide, simply pinnate, or below 2-pinnate; pinnules and upper pinnae l'-a' long, glabrous, or sparsely fibrillose below, 3" or less wide, short-stalked or sessile; veins obscure. On rocks, preferring limestone, Ontario to British Columbia and Mackenzie, Georgia, Mis- sissippi, Texas and California. Reported from northern Mexico. June-Sept. Clayton's Cliff- brake, Rock- or Winter-brake, Indian's Dream. 2. Pellea densa (Brack.) Hook. Oregon or Clayton's Cliff-brake. Fig. Jj. Onychium densum Brack. Fil. U. S. Expl. Exp. 120. 1854. Pellaea densa Hook. Sp. Fil. 2:
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
