Allotropa

Torrey & A. Gray in War Department [U.S.]

in War Department [U.S.], Pacif. Railr. Rep. 6(3): 81. 1858 ,.

Etymology: Greek allos, other or different, and tropos, turn or direction, alluding to inflorescence
Treatment appears in FNA Volume 8. Treatment on page 391. Mentioned on page 373.

Herbs, achlorophyllous, heterotrophic. Stems absent. Leaves absent. Inflorescences racemes, erect at emergence from soil, axis fleshy and fibrous, persistent after seed dispersal, white with red to maroon vertical stripes, 0.5–1 cm diam. proximal to proximalmost flower. Pedicels erect, somewhat elongated in fruit; bracteoles absent. Flowers radially symmetric, erect to spreading; sepals absent, rarely 2–5, distinct, linear to filiform; petals 5, distinct, white, without basal tubercles, (surfaces glabrous), corolla crateriform; intrastaminal nectary disc present; stamens 10, exserted; filaments terete, glabrous; anthers ovoid, without awns, without tubules, dehiscent by 2 oval slits; pistil 5-carpellate; ovary 5-locular; placentation axile; style straight, stout; stigma peltate, without subtending ring of hairs. Fruits capsular, erect, dehiscence basipetally loculicidal, no cobwebby tissue exposed by splitting valves at dehiscence. Seeds 100+, fusiform, mostly narrowly winged. x = 13.

Distribution

w North America

Discussion

Species 1: w North America.

Species 1

Selected References

None.

Lower Taxa

... more about "Allotropa"
Gary D. Wallace +
Torrey & A. Gray in War Department [U.S.] +
persistent +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
fibrous +  and fleshy +
acicular;plane +
coriaceous +
pseudoverticillate +, in basal rosettes +  and alternate +
persistent +  and deciduous +
rotate to crateriform campanulate cylindric globose or urceolate +
w North America +
undifferentiated +
fusiform +
Greek allos, other or different, and tropos, turn or direction, alluding to inflorescence +
erect +  and spreading +
unisexual +  and bisexual +
loculicidal +
multicellular +
whorled +, , +, opposite +, pseudoverticillate +  and alternate +
persistent +
scale-like +
reduced +
revolute;plane;toothed;entire;revolute;plane;toothed;entire +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
elongated +
distinct +
reduced +
not sticky +
in War Department [U.S.], Pacif. Railr. Rep. +
distinct +
fusiform +
distinct +
2 +  and 5 +
linear +  and filiform +
decumbent +  and erect +
straight +
Undefined subfam. Pyroloideae +, Undefined tribe Monotropaceae +  and Undefined tribe Pyrolaceae +
Allotropa +
Ericaceae subfam. Monotropoideae +
evergreen +, deciduous +  and perennial +