Difference between revisions of "Pterospora"
Gen. N. Amer. Pl. 1: 269. 1818 ,.
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|subfamily=Ericaceae subfam. Monotropoideae | |subfamily=Ericaceae subfam. Monotropoideae | ||
|genus=Pterospora | |genus=Pterospora | ||
Revision as of 21:30, 24 September 2019
Herbs, achlorophyllous, heterotrophic. Stems absent. Leaves absent. Inflorescences racemes, erect at emergence from soil, axis fleshy and fibrous, persistent after seed dispersal, pink to reddish or brownish, 0.5–1.5 cm diam. proximal to proximalmost flower. Pedicels decurved, somewhat longer in fruit; bracteoles absent. Flowers radially symmetric, nodding; sepals 5, distinct, lanceolate-ovate; petals 5, connate, cream to yellowish or white, without basal tubercles, (surfaces glabrous), corolla urceolate; intrastaminal nectary disc present; stamens 10, included; filaments broader proximally than distally, glabrous; anthers depressed-ovoid to ovoid, with awns, without tubules, dehiscent by 2 oval slits; pistil 5-carpellate; ovary 5-locular; placentation axile; style straight, slender; stigma capitate, without subtending ring of hairs. Fruits capsular, pendulous, dehiscence acropetally loculicidal, no cobwebby tissue exposed by splitting valves at dehiscence. Seeds 100+, ovoid, with broad, rounded, membranous wing attached at 1 end. x = 8.
Distribution
North America, n Mexico.
Discussion
Species 1: North America, n Mexico.
Species 1