Allium platycaule

S. Watson

Proc. Amer. Acad. Arts 14: 234. 1879.

IllustratedEndemic
Treatment appears in FNA Volume 26. Treatment on page 274. Mentioned on page 233.

Bulbs 1–5+, not clustered on stout primary rhizomes, renewal bulbs formed within coats of parent bulb, ovoid, 2–3 × 1.4–2.5 cm, increase bulbs ± equaling parent bulbs, rhizomes absent; outer coats enclosing 1 or more bulbs, gray or brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white, cells obscure, quadrate to rectangular, or not visible. Leaves usually deciduous with scape, withering from tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, falcate, 10–30-cm × 8–18 mm, margins entire. Scape usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, strongly flattened, winged distally, 7–25 cm × 2–7 mm. Umbel persistent, erect, loose, 30–90-flowered, globose, bulbils unknown; spathe bracts persistent, 2–5, 10–15-veined, lanceolate to broadly ovate, ± equal, apex acuminate. Flowers stellate, 8–15 mm; tepals spreading, bright pink to rose, narrowly lanceolate, ± equal, becoming erect, rigid, constricted distal to ovary in fruit, margins entire, apex long-acuminate; stamens exserted; anthers yellow; pollen gray; ovary crestless; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed, apex acute; pedicel 10–25 mm. Seed-coat dull or shining; cells smooth. 2n = 14.


Phenology: Flowering May–Jun.
Habitat: Rocky, sandy slopes
Elevation: 1500–2500 m

Discussion

Selected References

None.

Lower Taxa

None.

"thicker" is not a number."broad" is not a number.

... more about "Allium platycaule"
versatile +  and dorsifixed +
cordate +  and linear +
Dale W. McNeal Jr. +  and T. D. Jacobsen +
S. Watson +
whorled +, opposite +  and alternate +
dilated +
straight +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
falcate +
8mm;18mm +
conspicuous +
1 +  and 5 +
not visible +  and obscure +
roughened +  and smooth +
quadrate +  and rectangular +
Calif. +, Nev. +  and Oreg. +
1500–2500 m +
connate-coroniform +  and dilated +
sessile +  and pedicellate +
unisexual +  and bisexual +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
loculicidal +
membranaceous +  and leathery +
Rocky, sandy slopes +
paired +, paniculate +  and racemose +
deciduous +
gray +  and brown +
crested;3-lobed +
many;several +
spreading +  and erect +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
membranous +
zygomorphic +  and actinomorphic +
Flowering May–Jun. +
Proc. Amer. Acad. Arts +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
brown +  and gray +
lacking +  and 1 +
2 (?) +  and 3 (?) +
winged +  and solid +
deciduous +
7cm +  and 25cm +
flattened +
2mm +  and 7mm +
shining +  and dull +
wind-distributed +
1 +  and many +
obovoid +
Illustrated +  and Endemic +
adnate +  and free +
1 +  and several +
Allium platycaule +
species +
bright pink;rose +
persisting +
distinct +
erect +  and spreading +
lanceolate +
constricted +
sepaloid +  and petaloid +
narrower +
30-90-flowered +
persistent +
9 +, 8 +  and 7 +