An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language . ad. Flowers yellow. Dry woods. July-Sept. 12. H. Gronovii, L. (Fig. 3, pi. 166.) Hairy Hawkweed. Stemwith or without stem leaves. Basal leaves spatula-formed, 2 to 6 , quite hairy. Heads numerous. Flowers yellow. Dry soil. July-Sept. 13. H. Greenii, Porter and Britton. (Fig. 6, pi. 166.) GreensHawkweed. Stem lA to 2 ft. high, without hairs up to the in a tuft at base, spatula-formed or ])ear-sh
An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language . ad. Flowers yellow. Dry woods. July-Sept. 12. H. Gronovii, L. (Fig. 3, pi. 166.) Hairy Hawkweed. Stemwith or without stem leaves. Basal leaves spatula-formed, 2 to 6 , quite hairy. Heads numerous. Flowers yellow. Dry soil. July-Sept. 13. H. Greenii, Porter and Britton. (Fig. 6, pi. 166.) GreensHawkweed. Stem lA to 2 ft. high, without hairs up to the in a tuft at base, spatula-formed or ])ear-shaped, with low teethat borders or none, hairy. Heads in a spreading cluster on slender flower-Btems. Bracts of the involucre in 1 series. Mountains of Penna. May-June. 19. PRENANTHES, Vaill. (Nabalus, Cass.) Perennial herbs, with upright stems with many leaves, variable inform, with margins toothed or deeply lobed and with diffuse terminalclusters of greenish or yellowish, generally drooping, bell-shaped headsof flowers, each head composed of from 5 to 30 llowers. Involucre cylin-dric of linear bracts, generally in a single row with a few short ones at CHICORY FAMILY 625. Plate 1671. Prenanthes altissima. 2. P. alba. 3. P. trifoliolata. 4. P. nana. 5. 6. P. Boottii. 7. P. racemosa. 626 CiCHORIACEAE the base. Rays terminated by a nearly straight edge with 5 rather lowteeth. Fruit striated with an aigrette {pappus) of simple bristles varyingfrom deep brown to nearly white. Flants more than ij it. clusters diffuse. Heads with 5 to 6 flowers P. ahissima Heads with 8 to 12 flowers. Aigrette deep brown P- alba Aigrette straw-color. Involucre bracts with stiff hairs ... P. serpentaria Involucre bracts not hairy P. trifoliolata Flower cluster spicate. Leaves lobed nearly to midvein P. virgata Leaves not deeply lobed P. raceiiiosa Heads with 20 to 25 flowers P. crepidinea Plants not exceeding i^ ft. high. Leaves 3-divided P. nana Leaves arrow-shaped P. Boottii 1.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1910
