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A flora of northeastern Minnesota by Olga Lakela

By Olga Lakela

A plants of Northeastern Minnesota was once first released in 1965. Minnesota Archive variations makes use of electronic expertise to make long-unavailable books once more obtainable, and are released unaltered from the unique college of Minnesota Press editions.

A guide for the identity of the ferns, fern allies, flowering crops, timber, shrubs, and herbs of Minnesota's Arrowhead quarter, this quantity lists 113 botanic households and describes 1,300 species, with keys for id. There are eighty line drawings of plant species and 419 maps exhibiting distribution.

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Var. acaule (Beeby) Fern. Common Bur-reed. Stem 5-7 dm high, leaves with enlarged sheathing bases; some of the pistillate heads supra-axillary, in fruit up to 2 cm thick; nutlet beaks long-curving. Shores of brooks and lakes, and in swamps. 6581 Burntside L; 7383 Canyon. Nfld to Ont and s. ZOSTERACEAE (PONDWEED FAMILY) Submersed or floating-leaf aquatics; stems jointed, rooting at nodes; leaves alternate with sheathing stipular bases; sepals 4, stamens 4, carpels 4; flowers perfect, regular, apetal- 33 2 1 Figure 1.

Rupr. var. multifidum. Leathery Grape Fern. 7-2 dm tall; rhizome short with fleshy transversely wrinkled roots; leaf stalks peach-colored near the base; sterile blades ternate or tripinnate, reflexed; pinnules ovate obtuse, subentire, or denticulate in f. dentatum Tryon; leaf stalks 1-5 cm long, or 3-7 cm in var. intermedium (D. C. ) Farw. --Var. multifidum 15569 Sandbar Island in Duluth Harbor; 18956 shore outcrops of granite, Vermilion R at Gold Mine Camp; f. dentatum 13327, lichen and moss mats, flat outcrops of granite below observation tower, Ash R bluff; var.

Frequent on exposed rocks throughout the n parts of area. 6566 Burntside L, Ely. 13209 Finger Bay of Rainy L. NS to Man and s. ISOETACEAE (QUILLWORT FAMILY) Submersed aquatics; plants tufted, fibrous-rooted, with simple erect leaves arising from corms; spores of 2 kinds; sporangia borne within dilated leaf bases, ligule minute on adaxial side just above the sporangium. Isoetes L. Quillwort (Ancient Gr. name) Roots and corm somewhat fleshy; leaves soft or firm, linear, spongy, spirally arranged in rosettes, mostly with sporophylls, the outermost usually bearing megasporangia, the inner microsporangia; megaspores variously sculptured; microspores numerous.

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