. The Bryologist. Mosses; Liverworts; Lichens; Botany; Bryology. Plate XVI.—Ditrichum heteromallum (i) Lecf, X22. (2) Leaf-tip, X400. (3) Leaf-tip, X32. (4) Cells of leaf- middle, X400. 4a. Peristome-teeth bifid to base, not connate nor perforate; leaf-tip wide; basal marginal leaf-cells short. Ditrichum ambiguum Best—Wash, and Oreg. 4b. Peristome-teeth not bifid to base, more or less connate or perforate; leaf-tip narrow; basal marginal leaf-cells long. Ditrichum pusillum^"^ (Hedw.) Timm.—Wash., Calif.; eastern N. Plate XVIL—Ditrichum ambiguum (i) Leaf-tip, X32. (2) Leaf, X22. (3)
. The Bryologist. Mosses; Liverworts; Lichens; Botany; Bryology. Plate XVI.—Ditrichum heteromallum (i) Lecf, X22. (2) Leaf-tip, X400. (3) Leaf-tip, X32. (4) Cells of leaf- middle, X400. 4a. Peristome-teeth bifid to base, not connate nor perforate; leaf-tip wide; basal marginal leaf-cells short. Ditrichum ambiguum Best—Wash, and Oreg. 4b. Peristome-teeth not bifid to base, more or less connate or perforate; leaf-tip narrow; basal marginal leaf-cells long. Ditrichum pusillum^"^ (Hedw.) Timm.—Wash., Calif.; eastern N. Plate XVIL—Ditrichum ambiguum (i) Leaf-tip, X32. (2) Leaf, X22. (3) Plant, Xi. (4) Cells of leaf-middle, X400. (5) Cells of leaf-base, X400. (6) Leaf-tip, X400. (7) A split tooth of the peristome, X125. (8) Capsule, X18. Ditrichum homomallum Hampe; Trichostomum heteromallum Lindb. Leptotrichum pusillum Hampe; Ditrichum tortile Mul\.;Leptobarbula berica 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 Grout, A. J. (Abel Joel), b. 1867; Smith, Annie Morrill; Jennings, Otto Emery, 1877-; American Bryological and Lichenological Society; American Bryological Society. St. Louis, Mo. [etc. ] American Bryological and Lichenological Society
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