Flora of North America species comparison

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Allium lacunosum var. lacunosum

Allium lacunosum var. davisiae
Photo is of parent taxon

pitted onion
Photo is of parent taxon

Davis' pitted onion, pitted onion
Leaf

blade subterete to ± terete, arcuate, 1–2 times scape, 1–2 mm wide.

blade channeled, carinate, ± falcate, equaling scape, 1–3 mm wide.
Scape

10–20 cm.

15–35+ cm.
Umbel

compact, 5–25-flowered;

spathe bracts 2, apex acuminate.

loose, 10–35-flowered;

spathe bracts 2, apex acuminate.
Flowers

(6–)7–9 mm;

tepals white with deep pink or purple midveins;

pedicel 5–15 mm.

6–8 mm;

tepals white to pale pink with deep pink or purple midribs;

pedicel 4–21 mm.
2n

= 14.

= 14.

Allium lacunosum var. lacunosum

Allium lacunosum var. davisiae
Phenology Flowering Apr–Jun. Flowering Apr–May.
Habitat Apparently restricted to serpentine clays on ridges and peaks Rocky, sandy, or clay soils
Elevation 300–1000 m (1000–3300 ft) 600–2100 m (2000–6900 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Allium lacunosum var. lacunosum is known only from the central and south Coast Ranges, and on Santa Rosa and Santa Cruz islands.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Allium lacunosum var. davisiae is known only from the western Mojave Desert to the southern Central Valley.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 260. FNA vol. 26, p. 261.
Parent taxa Liliaceae > Allium > Allium lacunosum Liliaceae > Allium > Allium lacunosum
Sibling taxa
A. lacunosum var. davisiae, A. lacunosum var. kernensis, A. lacunosum var. micranthum
A. lacunosum var. kernensis, A. lacunosum var. lacunosum, A. lacunosum var. micranthum
Synonyms A. davisiae, A. pseudobulbiferum
Name authority unknown (M. E. Jones) McNeal & Ownbey: Madroño 29: 85. (1982)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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