. 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 102d meridian. Botany; Botany. Genus 5. PHLOX FAMILY. 63 5. POLEMONIUM [Tourn.] L. Sp. PI. 162. 1753. Perennial or rarely annual herbs, with alternate pinnate membranous leaves, and mostly large cymose-paniculate or thyrsoid flowers. Calyx herbaceous, not angled nor ribbed, cam- panulate, 5-cleft to about the middle, accrescent in fruit, the segments lanceolate or ovate, entire, erect or con
. 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 102d meridian. Botany; Botany. Genus 5. PHLOX FAMILY. 63 5. POLEMONIUM [Tourn.] L. Sp. PI. 162. 1753. Perennial or rarely annual herbs, with alternate pinnate membranous leaves, and mostly large cymose-paniculate or thyrsoid flowers. Calyx herbaceous, not angled nor ribbed, cam- panulate, 5-cleft to about the middle, accrescent in fruit, the segments lanceolate or ovate, entire, erect or connivent over the capsule. Corolla tubular-campanulate or funnelform, rarely rotate, blue, white or yellow, the limb 5-lobed. Stamens about equally inserted near the base of the corolla, declined, the filaments slender, often pilose at the base. Ovary ovoid; ovules few or several in each cavity. Capsule ovoid, obtuse, 3-valved. Seeds wingless, or narrowly winged, mucilaginous and emitting spiral threads when wetted. [Name not explained.] About is species, natives of the cooler parts of the north temperate zone. Besides the-follow- ing, some 10 others occur in the western parts of North America. Type species: Polemonium coeruleum L. Anthers exserted ; flowers 8"-io" broad ; stem erect. 1. P. Van Bruntiae. Anthers included ; flowers s"-6" broad ; stem reclining. 2. P. reptans. i. Polemonium Van Bruntiae Britton. American Jacob's Ladder. Fig. 3480. Polemonium coeruleum A. Gray, Man. Ed. 4, App. 1863. Not L. 1753. Polemonium Van Bruntiae Britton, Bull. Torr. Club 19: 224. pi. 131. 1892. Rootstock stout, horizontal, clothed with fibrous roots. Stems erect, glabrous below, somewhat glandular-pubescent above, ii°-2i° high, leafy to the top; leaflets of the lower leaves short-stalked or sessile, ovate or lanceolate, acute, i'-ii' long, those of the upper fewer, the uppermost leaves 3-5-foliolate or simple; cymose clusters panicled or solitary, rather loosely 3-5-flo
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
