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Alliaceae
Allium

not marked as a favorite taxon Allium cuthbertii Small. Common name: Cuthbert's Onion. Phenology: May-Jun; Jun-Jul. Habitat: Longleaf pine sandhills, other dry sandy areas. Distribution: C. SC south through GA and AL to ne. FL. Previous reports from NC are based on misidentifications or populations now recognized as Allium keeverae.

Glossary (beta!)

ID notes: The bright emerald green ovary of the fresh flowers is a striking and distinctive character for distinguishing A. cuthbertii and A. keeverae from some similar taxa.

Origin/Endemic status: Endemic

Synonymy ⓘ: = K4, S, S13, Poindexter, Weakley, & Williams (2017) in Weakley et al (2017); < Allium cuthbertii Small — FNA26, RAB, W, WH3; Allium cuthbertii Small. Basionym: Allium cuthbertii Small 1903

Links to other floras: < Allium cuthbertii - FNA26

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Heliophily ⓘ: 9

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image #1 of Allium cuthbertii© Brian Finzel, some rights reserved (CC BY-SA), uploaded by Brian Finzel source CC-BY-SA | Original Image ⭷
image #2 of Allium cuthbertii© Will Stuart | Original Image ⭷
image #4 of Allium cuthbertii© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #6 of Allium cuthbertii© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #8 of Allium cuthbertii© Brian Finzel, some rights reserved (CC BY-SA), uploaded by Brian Finzel source CC-BY-SA | Original Image ⭷
image #9 of Allium cuthbertii© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #11 of Allium cuthbertii© Brian Finzel, some rights reserved (CC BY-SA), uploaded by Brian Finzel source CC-BY-SA | Original Image ⭷
image #13 of Allium cuthbertii© Brian Finzel, some rights reserved (CC BY-SA), uploaded by Brian Finzel source CC-BY-SA | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: An erect, scapose perennial occurring rarely in sandhills, on granitic domes and flatrocks, and on the thin soils around rock outcrops receiving nutrient-rich seepage; often with plants that are restricted to calcium-rich substrates.

Stems: Stem a smooth flowering scape arising from a bulb with a cross-hatched fibrous covering.

Leaves: Leaves basal, flattish and solid, 8-15 in. long.

Inforescence:

Flowers: Flowers on stalks in a dome-shaped, compact umbel (no bulbils), which begins with a sacklike, membranous covering, dried remnants of which usually persists at the base of the inflorescence. Flowers white, sometimes streaked with pink, and consisting of 6 spreading, sword-shaped, pointy tepals, 6 stamens, and a striking emerald-green, bumpy-surfaced ovary.

Fruits: Fruit a 3-lobed capsules containing black seeds.

Comments:

Height: 8-24 in.

plant sale text:

bloom table text:

description: An erect, scapose perennial occurring rarely in sandhills, on granitic domes and flatrocks, and on the thin soils around rock outcrops receiving nutrient-rich seepage; often with plants that are restricted to calcium-rich substrates.

stems: Stem a smooth flowering scape arising from a bulb with a cross-hatched fibrous covering.

leaves: Leaves basal, flattish and solid, 8-15 in. long.

inflorescence:

flowers: Flowers on stalks in a dome-shaped, compact umbel (no bulbils), which begins with a sacklike, membranous covering, dried remnants of which usually persists at the base of the inflorescence. Flowers white, sometimes streaked with pink, and consisting of 6 spreading, sword-shaped, pointy tepals, 6 stamens, and a striking emerald-green, bumpy-surfaced ovary.

fruits: Fruit a 3-lobed capsules containing black seeds.

comments:

cultural notes:

germination code:

native range: NC, SC, GA, FL & AL



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