Thelypodium wrightii |
Thelypodium laxiflorum |
|
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Wright's stanleyella, Wright's thelypody |
catleaf, droopflower thelypody, loose-flower thelypody |
|
Habit | Biennials; slightly glaucous, glabrous. | Biennials; somewhat glaucous, glabrous throughout or pubescent basally. |
Stems | branched distally, (6.5–)9.5–22.5(–28) dm. |
branched distally, (1.5–)3–14(–23.5) dm, (glabrous throughout or sparsely to densely hirsute proximally). |
Basal leaves | (and proximal cauline): petiole (2–)4.5–8.5(–13.7) cm; blade often lanceolate, sometimes oblanceolate in outline (lateral lobes oblong to linear or deltate), (6.5–)9.5–22.5(–28) cm × 28–55(–75) mm, margins pinnately lobed or lyrate (lobes entire or denticulate). |
(and proximal cauline): petiole (1–)1.7–8(–11) cm, pubescent or glabrous; blade oblanceolate in outline (lateral lobes usually oblong to linear, rarely deltate), (4–)7.2–20.5(–30) cm × (6–)10–40(–100) mm, margins pinnately lobed or lyrate (lobes entire or dentate). |
Cauline leaves | petiolate; blade lanceolate to linear-lanceolate, 3.5–8.5(–13.5) cm × 7–14(–23) mm, margins usually entire or dentate, rarely lobed. |
petiolate; blade usually lanceolate to linear, sometimes oblanceolate to oblong, 1.5–7(–10) cm × 3–12(–20) mm, margins usually entire or repand, rarely lobed. |
Racemes | somewhat lax, considerably elongated in fruit. |
corymbose, somewhat lax, considerably elongated in fruit. |
Flowers | sepals spreading or ascending oblong to linear, (3–)4–6(–7) × (0.8–)1–1.3(–1.5) mm; petals usually white, rarely lavender, linear or oblong, 4–7.5(–9) × 1–1.8(–2) mm, margins not crisped, claw not differentiated from blade (base sometimes clawlike, to 2 mm, widest at base); nectar glands confluent; filaments equal, (3–)3.5–6.5(–8.5) mm; anthers (1–)1.5–2.5(–3) mm, circinately coiled; gynophore 0.2–2(–5) mm. |
sepals (equal), ascending, oblong, (2.5–)3–5(–5.5) × 1–1.7(–3) mm, (lateral pair not saccate); petals usually white, rarely lavender, usually spatulate, rarely obovate, 5–7.5(–9.5) × 1.5–2.5(–3.5) mm, margins not crisped, claw obscurely differentiated from blade (widest at base); nectar glands continuous, flat, subtending bases of stamens; filaments tetradynamous, median pairs 3–4.5(–5.5) mm, lateral pair 2.5–3.5(–4.5) mm; anthers included, oblong, (1–)1.5–2.2(–2.5) mm, not circinately coiled; gynophore 0.5–0.8(–1.5) mm. |
Fruiting pedicels | horizontal to divaricate, sometimes reflexed, straight or curved, sometimes secund, slender, (5–)7–13(–17) mm, slightly flattened at base. |
often divaricate, sometimes reflexed, rarely horizontal or divaricate-ascending, straight, slender, (4–)5–13(–19) mm, somewhat flattened at base. |
Fruits | horizontal or reflexed, torulose, straight to somewhat curved, flattened, (2.5–)3.8–7.4(–9) cm × 1–1.2(–1.5) mm, (replum not constricted between seeds); ovules 76–128 per ovary; style usually clavate to subclavate, rarely cylindrical, (0.5–)0.8–2(–3) mm. |
divaricate to reflexed, submoniliform to strongly torulose, straight or curved, terete, (2–)3–6.6(–7.4) cm × 0.7–1(–1.5) mm, (replum constricted between seeds); ovules 26–62 per ovary; style usually clavate to subclavate, rarely cylindrical, (0.5–)0.8–2(–5) mm. |
Seeds | 0.7–1.3(–1.5) × 0.5–0.8 mm. |
(oblong), (1–)1.3–1.8(–2) × 0.5–1 mm. |
Thelypodium wrightii |
Thelypodium laxiflorum |
|
Phenology | Flowering (Mar-)Jun–Oct. | Flowering May–Sep. |
Habitat | Rock crevices, shady slopes, rocky hillsides, canyons, stream banks, creek beds, pinyon-juniper communities, oak woodlands | Talus, rocky slopes, cliffs, pinyon-juniper-brush communities |
Elevation | 1200-2300 m (3900-7500 ft) | 1500-3100 m (4900-10200 ft) |
Distribution |
AZ; CO; NM; TX; UT; Mexico (Baja California, Chihuahua, Coahuila, Hidalgo)
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CO; NV; UT
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Discussion | Study of extensive material that has accumulated during the past three decades reveals that the differences between subsp. oklahomensis and subsp. wrightii, which are based solely on variations in gynophore and fruit lengths, do not hold as clearly as previously thought (I. A. Al-Shehbaz 1973; R. C. Rollins 1993). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 738. | FNA vol. 7, p. 735. |
Parent taxa | Brassicaceae > tribe Thelypodieae > Thelypodium | Brassicaceae > tribe Thelypodieae > Thelypodium |
Sibling taxa | ||
Synonyms | Stanleyella wrightii, T. wrightii subsp. oklahomensis | Stanleyella wrightii var. tenella, T. wrightii var. tenellum |
Name authority | A. Gray: Smithsonian Contr. Knowl. 3(5): 7. (1852) | Al-Shehbaz: Contr. Gray Herb. 204: 129, plate 22A. (1973) |
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