Flora of North America species comparison

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Crinum americanum

Crinum americanum var. traubii

Florida swamp-lily, seven sisters, southern swamp crinum, string lily
Photo is of parent taxon
Bulbs

3.5–6 cm diam., neck 4–6 cm.

Leaves

10–15 dm × 1–4 (–7) cm;

blade lorate, margins usually scabrous.

longer than scape;

blade dark green.
Scape

equaling leaves.

Umbels

2–7-flowered.

6–7-flowered.
Flowers

sessile;

perianth white, salverform, tube 6–15 cm, limb lobes linear, narrowly elliptic, or oblanceolate, 5–15 × 1–1.5 cm.

Capsules

2.5–4.5 × 2.5–4 cm, beak 1–8 cm.

Crinum americanum

Crinum americanum var. traubii
Phenology Flowering summer–autumn.
Habitat Swamps, marshes
Elevation 0–100 m (0–300 ft)
Distribution
from USDA
sc United States; se United States
[WildflowerSearch map]
[BONAP county map]
from FNA
TX
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

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

Variety traubii is known only from specimens grown from bulbs collected in Jefferson and Hardin counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Umbels 2–5-flowered.
var. americanum
1. Umbels 6–7-flowered
var. traubii
Source FNA vol. 26, p. 278. FNA vol. 26, p. 279.
Parent taxa Liliaceae > Crinum Liliaceae > Crinum > Crinum americanum
Sibling taxa
C. asiaticum, C. bulbispermum, C. zeylanicum
C. americanum var. americanum
Subordinate taxa
C. americanum var. americanum, C. americanum var. traubii
Synonyms C. strictum var. traubii
Name authority Linnaeus: Sp. Pl. 1: 292. (1753) (Moldenke) L. S. Hannibal: Bull. Louisiana Soc. Hort. Res. 13: 308. (1972)
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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