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 . Genus 33. Schwalbea americana L. Fig- 3839- FIGWORT FAMILY Chaff-seed. Schwalbea americana L. Sp. PI. 606. 1753. Stem slender, strict, i°-2° high. Leaves ob-long or ovate-oblong, entire, acute at both ends,I-ii long, 2-8 wide, the upper graduallysmaller and passing into the bracts of the ratherloose spike; flowers very nearly sessile, i-i¥long, longer than the bracts; bractlet
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 . Genus 33. Schwalbea americana L. Fig- 3839- FIGWORT FAMILY Chaff-seed. Schwalbea americana L. Sp. PI. 606. 1753. Stem slender, strict, i°-2° high. Leaves ob-long or ovate-oblong, entire, acute at both ends,I-ii long, 2-8 wide, the upper graduallysmaller and passing into the bracts of the ratherloose spike; flowers very nearly sessile, i-i¥long, longer than the bracts; bractlets at the baseof the calyx linear, shorter than its tube; corolla-tube slightly exceeding the lower lobes, of thecalyx, these connate to near their apices; capsuleenclosed by the calyx. In wet sandy soil, eastern Massachusetts to Flor-ida and Louisiana, near the coast. 34. EUPHRASIA [Tourn.] L. Sp. PI. 604. 1753 Annual or perennial low mostly branched herbs, parasitic on other plants, with oppositedentate or incised leaves, and small blue purplish yellow or white often variegated flowers interminal leafy-bracted spikes. Calyx not bracteolate at the base, campanulate or tubular,4-cleft (rarely 5-cleft with one of the lobes much smaller than the others). Corolla veryirregular, 2-lipped, the upper lip erect, scarcely concave, 2-lobed, its margins recurved; lowerlip larger, 3-lobed, spreading, its lobes either emarginate or obtuse. Stamens 4, didynamous,ascending under the upper lip of the corolla; anther-sacs equal and parallel, mucronate at thebase. Capsule oblong, loculicidally dehiscent, many-seeded. Seeds oblong, longitudinallyribbed. [Greek, delight.] About no species, natives of temperate and cold regions of both the northern and southernhemispheres. Besides the following, another occurs in northwestern North America. Type species:Euphrasia offic
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
