. 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. 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
. 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. 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, not con- tracted at the base, rather closely ap- pressed to the achene. (P. Bayi Am. auth., not Babington.) — Sea-coast, e. also Wash, to Alaska. Fig. 707. P. Fowleri. Upper part of stem X % 3. P. exs§rtum Small. .Breci much branched annual, 3-8 Fruiting calyx x 3. dm. high ; leaves lanceolate, rather light or pale green, 1-3 cm. long, usually exceeded by the internodes; sepals oblong, green, normally 5, unequal, closely appressed to the base of the much exserted chestnut-colored ovate-lanceolate achene. — Brackish meadows, N. B. to N. J. ; and on sand-bars and prairies. 111., Mo., and Neb. to the Saskatchewan. Fig. 708. 4. P. prolificum (Small) Robinson. Erect or nearly so, much branched, slightly rigid, 3 dm. high; leaves linear- ol/long, obtuse or acute, firm, in a dried state veiny; stipules soon frayed to bristle-like remnants surpassing considerably the small sessile roseate 5-parted flowers. (P. ramosissimum, var. Small.)—Sea-shore, e. Que. to Va.; also Mo., Neb., and Kan. Fig. 709. 5. P. aviculire L. Slender, mostly prostrate or ascend- ing, bluish-green; leaves lanceolate, .6-20 mm. long, usually acute or acutish; sepals hardly 2 mm. long, green with 709 P proliflcum pinkish margins; stamens 8 (rarely 6) ;
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