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pinelandcress

Carolina pinelandcress

Habit Annuals; not scapose; (usually somewhat glaucous), glabrous throughout (rarely petal claws pubescent).
Stems

erect, often branched distally, rarely unbranched, (usually slender, rarely stout).

(2–)3–6.5(–8) dm.

Leaves

cauline (basal not seen, soon withered, not rosulate);

petiolate or sessile;

blade (base cuneate, auriculate, or amplexicaul), margins entire.

Cauline leaves

petiolate (petiole (0.05–)0.1–0.2(–0.3) cm proximally, obsolete distally);

blade usually linear-oblanceolate to oblanceolate, rarely linear, (0.7–)1–3(–4) cm × 1.5–6(–8) mm, base cuneate, apex rounded to retuse.

Racemes

(corymbose, several-flowered, floral buds clavate), not or slightly elongated in fruit.

0.3–2(–3) cm in fruit.

Flowers

sepals spreading or reflexed, linear-oblanceolate, lateral pair not saccate basally;

petals (spreading), white or pink to deep purple, obovate, orbicular, or spatulate, (margins entire or crisped), claw strongly differentiated from blade (slender, often dilated basally, usually minutely to coarsely papillate or pubescent, rarely nearly smooth, apex rounded);

stamens (strongly exserted, spreading), subequal;

filaments not dilated basally;

anthers linear, (coiled after dehiscence);

nectar glands confluent, subtending bases of stamens, (often 6 teeth alternating with filaments), median glands present.

sepals white or purplish, spreading or reflexed, 3–5(–7) × 0.2–0.3 mm;

petals white or pink, broadly obovate to spatulate, 4–9 mm, blade 2–5 × 1.5–3 mm, claw 2–4 mm, nearly smooth or obscurely papillate, margins entire;

filaments 6–8(–10) mm;

anthers 1–1.5 mm;

gynophore slender, (5–)7–11 mm.

Fruiting pedicels

(often deciduous at maturity, leaving elevated discoid scars on rachis), divaricate, slender, (sometimes filiform, straight, with 2 lateral glands basally).

(4–)5–9(–11) mm.

Fruits

stipitate, narrowly linear, smooth, (recurved), latiseptate;

valves each with prominent midvein throughout;

replum rounded;

septum complete;

ovules 20–60 per ovary;

style usually obsolete, rarely distinct;

stigma entire.

2–4(–5) cm × 0.7–1 mm;

ovules 32–54 per ovary;

style rarely to 0.1 mm.

Seeds

uniseriate, not winged, oblong;

seed coat (concentrically striate), not mucilaginous when wetted;

cotyledons accumbent.

0.6–0.8 × 0.4–0.5 mm.

x

= 12.

Warea

Warea cuneifolia

Phenology Flowering Jul–Sep.
Habitat Sandy areas, scrublands, sand hills, fields, open banks, oak-pinyon woods, roadside embankments
Elevation 0-150 m (0-500 ft)
Distribution
from USDA
se United States
[BONAP county map]
from FNA
AL; FL; GA; NC; SC
[WildflowerSearch map]
[BONAP county map]
Discussion

Species 4 (4 in the flora).

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

Although Warea cuneifolia is fairly widespread in Georgia and South Carolina, it is known in Alabama only from Pike County, in Florida from Gadsden and Liberty counties, and in North Carolina from Harnett and Hoke counties.

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

Key
1. Cauline leaves petiolate or obsolete, blades linear-oblanceolate, oblancolate, or narrowly oblong
→ 2
1. Cauline leaves sessile, blades oblong, ovate, or lanceolate
→ 3
2. Petal claws nearly smooth or obscurely papillate, margins entire; gynophores (5-)7-11 mm.
W. cuneifolia
2. Petal claws coarsely papillate to pubescent, margins crisped; gynophores 3-6(-7) mm.
W. carteri
3. Leaf blade base not clasping stem, obtuse to minutely auriculate.
W. sessilifolia
3. Leaf blade base clasping stem, amplexicaul to strongly auriculate.
W. amplexifolia
Source FNA vol. 7, p. 742. Author: Ihsan A. Al-Shehbaz. FNA vol. 7, p. 742.
Parent taxa Brassicaceae > tribe Thelypodieae Brassicaceae > tribe Thelypodieae > Warea
Sibling taxa
W. amplexifolia, W. carteri, W. sessilifolia
Subordinate taxa
W. amplexifolia, W. carteri, W. cuneifolia, W. sessilifolia
Synonyms Cleome cuneifolia, Stanleya gracilis
Name authority Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 83, plate 10. (1834) (Muhlenberg ex Nuttall) Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 84. (1834)
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