Thysanocarpus curvipes

Hooker

Fl. Bor.-Amer. 1: 69, plate 18, fig. A. 1830.

Synonyms: Thysanocarpus amplectens Greene Thysanocarpus curvipes var. cognatus Jepson Thysanocarpus curvipes var. elegans (Fischer & C. A. Meyer) B. L. Robinson Thysanocarpus curvipes var. emarginatus (Greene) Jepson Thysanocarpus curvipes var. eradiatus Jepson Thysanocarpus curvipes var. involutus Greene Thysanocarpus curvipes var. longistylus Jepson Thysanocarpus curvipes subsp. madocarpus Piper Thysanocarpus curvipes var. pulchellus (Fischer & C. A. Meyer) Greene Thysanocarpus emarginatus unknown Thysanocarpus filipes unknown Thysanocarpus foliosus unknown Thysanocarpus hirtellus unknown Thysanocarpus laciniatus var. emarginatus (Greene) Jepson Thysanocarpus pulchellus unknown Thysanocarpus trichocarpus unknown
Treatment appears in FNA Volume 7. Treatment on page 740. Mentioned on page 739, 741.
Revision as of 20:21, 24 September 2019 by FNA>Volume Importer

Stems 1–6(–8) dm. Basal leaves: blade oblanceolate to obovate, 1–6(–13) cm, margins subentire to sinuate-dentate, surfaces often hirsute, sometimes glabrous, (trichomes white, 0.3–0.6 mm). Cauline leaves: blade lanceolate, widest at base, base auriculate-clasping, auricles extending around stem (at least some leaves). Racemes: internodes 3–6(–9) mm in fruit. Fruiting pedicels smoothly recurved, (proximal) 3–7(–12) mm. Fruits flat or plano-convex, obovate to nearly orbicular, [3–6(–9) mm wide]; valves pubescent or glabrous, trichomes clavate and 0.2–0.4 mm, or pointed and ± 0.2 mm; wing entire, perforate, or incised, rays absent or distinct, (0–)0.2–0.5 mm wide.


Phenology: Flowering Feb–Jun.
Habitat: Rocky slopes, washes, oak woodlands, streamsides, meadows, sometimes serpentine soils
Elevation: 150-2000 m

Distribution

V7 1298-distribution-map.gif

B.C., Ariz., Calif., Colo., Idaho, Nev., N.Mex., Oreg., Utah, Wash., Mexico (Baja California, Sonora).

Discussion

Thysanocarpus curvipes is the most widespread and variable species in the genus. Variants have been named as varieties or species, but they grade into each other imperceptibly. Notable among these are var. elegans, a form with incised or perforate fruit wings, and var. eradiatus, a form with rayless, entire wings. Some of these may be the result of hybridization with other taxa. For instance, var. elegans has large fruits and occurs in the vicinity of T. radians, the largest-fruited member of the genus. Furthermore, fruits of var. elegans often have pointed hairs like those usually found on fruits of T. radians; such hairs are not found on fruits of any other members of the genus. Thysanocarpus curvipes includes both diploid and tetraploid populations (M. D. Windham, unpubl.), but these do not appear to segregate into recognizable groups. Although the variation in T. curvipes is considerable, its great complexity prevents recognition of infraspecific taxa at this time.

Selected References

None.

Lower Taxa

None.
... more about "Thysanocarpus curvipes"
Patrick J. Alexander +  and Michael D. Windham +
Hooker +
B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +, Mexico (Baja California +  and Sonora). +
150-2000 m +
Rocky slopes, washes, oak woodlands, streamsides, meadows, sometimes serpentine soils +
Flowering Feb–Jun. +
Fl. Bor.-Amer. +
Thysanocarpus amplectens +, Thysanocarpus curvipes var. cognatus +, Thysanocarpus curvipes var. elegans +, Thysanocarpus curvipes var. emarginatus +, Thysanocarpus curvipes var. eradiatus +, Thysanocarpus curvipes var. involutus +, Thysanocarpus curvipes var. longistylus +, Thysanocarpus curvipes subsp. madocarpus +, Thysanocarpus curvipes var. pulchellus +, Thysanocarpus emarginatus +, Thysanocarpus filipes +, Thysanocarpus foliosus +, Thysanocarpus hirtellus +, Thysanocarpus laciniatus var. emarginatus +, Thysanocarpus pulchellus +  and Thysanocarpus trichocarpus +
Thysanocarpus curvipes +
Thysanocarpus +
species +