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string-lily, swamp-lily

Florida swamp-lily, seven sisters, southern swamp crinum, string lily

Habit Herbs, perennial, scapose, from bulbs with elongate columnar apices.
Bulbs

3.5–6 cm diam., neck 4–6 cm.

Leaves

basal, thick;

blade lorate or ensiform, not narrowed near base.

10–15 dm × 1–4 (–7) cm;

blade lorate, margins usually scabrous.

Scape

solid.

equaling leaves.

Inflorescences

umbellate, few- to many-flowered, subtended by 2 large, lanceolate, scarious bracts.

Umbels

2–7-flowered.

Flowers

sessile or pedicellate;

perianth connate proximally, red to white, often striped, streaked, or overlaid with red abaxially, funnelform to salverform to semicampanulate, tube straight to curved, ca. same length as limb lobes;

stamens inserted on perianth tube throat;

filaments thin, often declinate;

ovary inferior, globose;

style slender;

stigma capitate.

sessile;

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

Fruits

capsular, globose or subglobose, usually prominently beaked.

Capsules

2.5–4.5 × 2.5–4 cm, beak 1–8 cm.

Seeds

fleshy, testa often corky.

Crinum

Crinum americanum

Distribution
from USDA
Tropical and warm regions worldwide; mostly in Africa
[BONAP county map]
from USDA
sc United States; se United States
[WildflowerSearch map]
[BONAP county map]
Discussion

Species ca. 100 (4 in the flora).

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

Varieties 2 (2 in the flora).

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

Key
1. Flowers sessile or nearly so.
→ 2
1. Flowers distinctly pedicellate.
→ 3
2. Perianth white.
C. americanum
2. Perianth purplish red, particularly abaxially.
C. zeylanicum
3. Perianth pink to red; leaves 3–5 cm wide; umbels 8–13-flowered.
C. bulbispermum
3. Perianth white; leaves 7.5–12 cm wide; umbels 20–100-flowered.
C. asiaticum
1. Umbels 2–5-flowered.
var. americanum
1. Umbels 6–7-flowered
var. traubii
Source FNA vol. 26, p. 278. Author: Walter C. Holmes. FNA vol. 26, p. 278.
Parent taxa Liliaceae Liliaceae > Crinum
Sibling taxa
C. asiaticum, C. bulbispermum, C. zeylanicum
Subordinate taxa
C. americanum, C. asiaticum, C. bulbispermum, C. zeylanicum
C. americanum var. americanum, C. americanum var. traubii
Name authority Linnaeus: Sp. Pl. 1: 291. (1753): Gen. Pl. ed. 5, 141. (1754) Linnaeus: Sp. Pl. 1: 292. (1753)
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