. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 358 POIiYGONACEAE (BUCKWHEAT FAMILY) 1. 2. P. Fowleri. 8. »rtmn, filaments broad at base; styles 3 ; cotyledons Incumbent; albumen h6rny glabrous annuals, except nos. 1 and 2. A cheneft conspicuously exserted. Prostrate, maritime ; acliene broadly ovold-pyramldaL Calyx-lobes petaloid, broadly obovate; foliage nearly white Calyx-lobes subberbaceoiis, oblonff ; foliage pale green . Erect; achene elongated, lanceolate-pyramidal Achenes ne
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 358 POIiYGONACEAE (BUCKWHEAT FAMILY) 1. 2. P. Fowleri. 8. »rtmn, filaments broad at base; styles 3 ; cotyledons Incumbent; albumen h6rny glabrous annuals, except nos. 1 and 2. A cheneft conspicuously exserted. Prostrate, maritime ; acliene broadly ovold-pyramldaL Calyx-lobes petaloid, broadly obovate; foliage nearly white Calyx-lobes subberbaceoiis, oblonff ; foliage pale green . Erect; achene elongated, lanceolate-pyramidal Achenes nearly or quite included by the fruiting calyx. Branebes terete or nearly so. Flowers small; sepals (normally 5) white or roseate, mm. long; pedicels included. Erect, much branched; leaves linear-oblong, slightly rigid : flowers much surpassed by the bristle-like remnants of the stipules . 4. P,prollflcvnH^ Prostrate or rarely erect; leaves not firm, bluish green; flowers mostly exserted beyond the hyahne flaccid torn stipules . 6. P. aviculare. Flowers larger, the pedicels exserted ; sepals (often 6) 2-3 mm. long. Leaves elliptical, yellowish green, obtuse 6. P. erectum. Leaves lanceolate, acute ... ...... 7. P. ramosisslmv/m Branches rather sharply angled. Leaves strongly plicate; flowers erect 8. P. fenue. Leaves flat with revolute margins; flowers nodding . . 9. P. DouglaaU,. 706. P. maritimum. Flowering branch x %. Fruiting calyx X 8. Stem-leaf x 1. Canada and Me.; 1. P. maritimum L. Prostrate, very glaucous, nearly white; leaves mostly small, linear-oblong, very thick, usually exceeding the short internodes; stipules silvery; sepals broadly obovate, petaloid, contracted at the base, the broad ro- seate tips inclining to spread in fruit. — Sandy sea-coast, Mass. to Fla., local. (Eu.) Fig. 706. 2. P. FowlSri Robinson. Prostrate, pale green; leaves narrowly elliptic, about equaling the full grown inter- nodes; sepals oblong, herbaceous with white or roseate margin,
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