. 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. Genus 3. DOGBANE 6. Apocynum pubescens R. Br. Velvet Dog- bane. Fig. 3381. A. pubescens R. Br. Mem. Wern. Soc. 1: 68. 1811. Apocynum cannabinum var. pubescens A. DC. Prodr. 8: 440. 1844. Whole plant, including the pedicels and calyx, densely velvety-pubescent, or the stem sometimes glabrate. Branches ascending; leaves oval to elliptic, obtuse or acute
. 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. Genus 3. DOGBANE 6. Apocynum pubescens R. Br. Velvet Dog- bane. Fig. 3381. A. pubescens R. Br. Mem. Wern. Soc. 1: 68. 1811. Apocynum cannabinum var. pubescens A. DC. Prodr. 8: 440. 1844. Whole plant, including the pedicels and calyx, densely velvety-pubescent, or the stem sometimes glabrate. Branches ascending; leaves oval to elliptic, obtuse or acute at the apex, strongly mucronate, obtuse or obtusish at the base, the veins impressed in the pubescence of the lower surface; petioles i"-2" long; cymes dense; calyx-segments about as long as the tube of the corolla, lanceolate, acute; corolla- lobes erect; follicles about 4' long. In dry sandy soil, Ontario to Rhode Island, Maryland, Alabama, Iowa and Kansas. April-Aug. Perhaps a pu- bescent race of A. cannabinum L. 4. TRACHELOSPERMUM Lemaire, Jard. Fleur. 1: pi. 61. 1851. Twining woody vines (some exotic species nearly erect shrubs), with opposite entire deciduous leaves, and small yellow greenish or white flowers in terminal and axillary com- pound cymes. Calyx small, deeply 5-parted, glandular within, the segments narrow. Corolla funnelform or salverform, the tube nearly cylindric, expanded above,' the lobes convolute, more or less twisted. Stamens included, or short exserted; anthers sagittate, acuminate, connivent around the stigma and slightly adherent to it. Disk of 5 glandular lobes. Ovary of 2 carpels; ovules numerous in each carpel; style slender, its apex thickened below the narrow ring of the ovoid stigma. Follicles much elongated, slender. Seeds linear or oblong, not beaked, long-comose at the apex. [Greek, neck-seed, but the seed is not beaked.] About 6 species, natives of eastern Asia and North America, Type species: Trachelospermum jasminoides Lemaire,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
