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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 102nd meridian. Botany. RHAMNACEAE,. 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 narrowed at
. 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 102nd meridian. Botany. RHAMNACEAE,. 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 narrowed at the base, li'-aj' long, I'-ii' wide; petioles 2"-4" long; umbels i-6-flow^ered, strictly sessile in the ; fiowers 5-merous, perfect; calyx nearly hemi- spheric, its lobes ovate, acute; fruiting pedicels 2"-5" long; fruit z'-a" 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, .'\rro\v-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 5, 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.] of North America and northern Mexico. Type specii Cca â ovate-oblong ; peduncles long. )r oval-lanceolate ; peduncles short. Ceanothus americanus L. New Jersey Tea. Red-root. Fig. 28. Ccanothtis americanus L. Sp. PI. 195. 1753- Stems erect or ascending, branching, sev- eral commonly
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913