. A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4. Botany; Plants -- United States; Plants -- Canada. CXXI. EUPHORBIACE.'E. 485 ginate; ca'ps. with the lobes obtusely margined.—® This little polymorphous plant is common in shallow streams and muddy places, U. S. Stem floating, 1—2f long, composed of 2 tubes, simple or branched. Leaves 2 at each node, becoming crowded above into a star-like tuft upon the surface of the water,
. A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4. Botany; Plants -- United States; Plants -- Canada. CXXI. EUPHORBIACE.'E. 485 ginate; ca'ps. with the lobes obtusely margined.—® This little polymorphous plant is common in shallow streams and muddy places, U. S. Stem floating, 1—2f long, composed of 2 tubes, simple or branched. Leaves 2 at each node, becoming crowded above into a star-like tuft upon the surface of the water, the lower ones becoming gradually narrower, and the lowest quite linear. Flowers white, axillary, 1 or 2 together, often monoecious. Anther a little "exseiied, yellow. May—Sept. ^. autumnatis. Darl. (C. autumnalis. L. C. linearis. Ph.) Floating; Ivs. nearly all linear, 1-veined, truncate or emarginate, the upper ones a little di- lated towards the end.—In similar situations with, and generally accompanyiivg the former. y. terresirls. Darl. (C. terrestris. Raf. C. brevifolia. Ph.) Procumbent and diffuse; Ivs. all oblong, obtuse, crowded, fleshy.—Grows on soft mud, over- spreading the surface. This form evidently depends on the locality. Order CXX. PODOSTEMACE^.—Tmreadfoots. Herts aquatic, without spiral vessels, of the habit of the liverworts or mossea. • Lvs. capillary or linear, not articulated with the stem. Fis. raoncBcious, achlamydeous, bursting througli an irregularly lacerated spathe. Sta. often reduced to 1 or 2, and raonadelphous. Ova. free, 2—3-celled. Sty. 2 or 0. Stig. 2—3. Pr.—Capsule subpedicellate, opening by 2 valves. Sds. numerous, without albumen, attached to a central column. Genera 9, species 25, natives of N. America and Asia. PODOSTEMUM. L. C. Rich. Gr. TTOvs, noSo;, afoot, a-rijiov ; the stamens being apparently on a common foot-stalk. Stamens 2, with the filaments united below; ovary oblong-ovoid ; stigmas 2, sessile, recurved;
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectbotany, bookyear1847
