. Our ferns in their haunts [microform] : a guide to all the native species. Ferns; Fougères. 96 THE WOODSIAS. iiliii': but further south it appears to be half evergreen. Among its common names are oblong Woodsia, hairy Woodsia and hair fern. A living plant of this species is illustrated in the initial design for this chapter. The Obtuse Woodsia, The obtuse Woodsia (Wiwdsia obtusa) is the only com- mon member of the genus in eastern North America. It is to be looked for on shaded ledges and in the loose talus at the base of cliffs and seldom occurs in the ex- posed situations affected by Ihrii
. Our ferns in their haunts [microform] : a guide to all the native species. Ferns; Fougères. 96 THE WOODSIAS. iiliii': but further south it appears to be half evergreen. Among its common names are oblong Woodsia, hairy Woodsia and hair fern. A living plant of this species is illustrated in the initial design for this chapter. The Obtuse Woodsia, The obtuse Woodsia (Wiwdsia obtusa) is the only com- mon member of the genus in eastern North America. It is to be looked for on shaded ledges and in the loose talus at the base of cliffs and seldom occurs in the ex- posed situations affected by Ihriisis. When it docs find itself in the sun, the change is apparent at once since it takes on a yellow-green colour and becomes thicker and more erect. In length the blades vary from six to fifteen inches. They are oblong ovate in outline and once pinnate with triangular-ovate, rather distant pinna.'. The pinna; are pinnatifid, or pinnate near the base, with oblong, slightly lobed pinnules and segments, lioth pinnules and pinnae are quite blunt. This feature is one of tlie points by which it may be distinguished su- perficially from Cystoptcris fra- gilis with which it is very often confused. The stipes are about a third as long as the blades, light in colour and bear scattered brownish scales. Similar scales are found on the rachis. The blades are nearly always minutely glandular-hairy and the rootstock is short. The sori are round and borne near the edge of the segments on ordinary fronds. Under a lens they are among the most beautiful of their kind. As in all the. FRUITING PINNA. H I) I. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Clute, Willard N. (Willard Nelson), 1869-1950. Toronto : W. Briggs
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