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. 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. 5. Rhamnus Frangula L. Alder Buckthorn. Black Dogwood. Fig. 2827. Rhamnus Frangula L. Sp. PI. 193. 1753. A shrub, reaching a maximum height of about 8°, the young twigs finely and sparsely puberulent. Leaves thin, elliptic or obovate, entire or very ob- scurely crenulate, glabrous on both surfaces, obtuse or cuspidate at the apex, rounded or narrovifed at the b
. 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. 5. Rhamnus Frangula L. Alder Buckthorn. Black Dogwood. Fig. 2827. Rhamnus Frangula L. Sp. PI. 193. 1753. A shrub, reaching a maximum height of about 8°, the young twigs finely and sparsely puberulent. Leaves thin, elliptic or obovate, entire or very ob- scurely crenulate, glabrous on both surfaces, obtuse or cuspidate at the apex, rounded or narrovifed at the base, iV-^V long, i'-i4' wide; petioles 2"-4" long; umbels i-6-flowered, strictly sessile in the axils ; flowers 5-merous, perfect; calyx nearly hemi- spheric, its lobes ovate, acute; fruiting pedicels 2"-s" long; fruit 3"-4" in diameter, the 3 nutlets compressed, not grooved. In bogs, Long Island, northern New Jersey and On- tario. Naturalized from Europe. May-June. Black- alder. Berry-alder. Arrow-wood. Persian-berry. 3. CEANOTHUS L. Sp. PI. 195. 1753. Shrubs, with alternate petioled leaves, and terminal or axillary corymbs or panicles of white blue or yellowish perfect flowers. Calyx-tube hemispheric, or top-shaped, the limb 5-lobed. Petals S, hooded, clawed, longer than the calyx-lobes, inserted under the disk. Stamens 5; filaments filiform, elongated. Ovary immersed in the disk and adnate to it at the base, 3-lobed. Disk adnate to the calyx. Style short, 3-cleft. Fruit dry, 3-lobed, sepa- rating longitudinally at maturity into 3 nutlets. Seed-coat smooth; endosperm fleshy; cotyle- dons oval or obovate. [Name used by Theophrastus for some different plant.] About 55 species, natives of North America and northern americanus L. Leaves ovate or ovate-oblong ; peduncles long. Leaves oblong or oval-lanceolate ; peduncles short. Mexico. Type species : Ceanothu 1. C. americanus. 2, C. ovatus. I. Ceanothus americanus L. New Jersey Tea. Red-root. Fig. 28
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913