Cakile lanceolata

(Willdenow) O. E. Schulz in I. Urban
in I. Urban, Symb. Antill. 3: 504. 1903.
Basionym: Raphanus lanceolatus Willdenow Sp. Pl. 3: 562. 1800
Treatment appears in FNA Volume 7. Treatment on page 426. Mentioned on page 425.

Annuals, (usually sprawling). Stems erect to prostrate, (much-branched), often 5+ dm. Cauline leaves (shortly petiolate or sessile); blade broadly ovate to ovate-lanceolate, or (distal) oblanceolate, (not especially fleshy, smaller distally), margins entire, dentate, or pinnatisect. Racemes often 3+ dm; rachis straight. Fruiting pedicels 1.5–4 mm. Flowers: sepals 3.5–5 mm, lateral pair saccate basally; petals usually white, rarely lavender, 4.9–9.4 × 3–4.5 mm, claw distinct. Fruits (weakly 4-angled to terete, striate or sulcate), fusiform or lanceoloid [turbinate], 15–31 × 3–4 mm; proximal segment terete, (5–10 mm); terminal segment slenderly conical, (9–18 mm), apex usually acute. Seeds: cotyledons accumbent or, occasionally, incumbent.

Distribution

V7 630-distribution-map.gif

Fla., Tex., Mexico, West Indies, Central America.

Discussion

Subspecies 4 (3 in the flora).

Subspecies alacranensis is known from the Yucatán Peninsula.

Selected References

None.

Key

1 Fruits lanceoloid, apex not tapering abruptly, terminal segment at least 2 times length of proximal segment; leaf blades: margins usually sinuately or crenately lobed, rarely pinnatisect. Cakile lanceolata subsp. lanceolata
1 Fruits fusiform or lanceoloid, apex tapering abruptly, terminal segment less than 2 times length of proximal segment; leaf blades: margins pinnatifid or entire > 2
2 Fruits fusiform, not constricted at articulation, 4- or 8-sulcate. Cakile lanceolata subsp. fusiformis
2 Fruits lanceoloid, usually constricted at articulation, weakly 4-angled or terete. Cakile lanceolata subsp. pseudoconstricta