Difference between revisions of "Ayenia filiformis"
Proc. Amer. Acad. Arts 24: 42. 1889.
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|subfamily=Malvaceae subfam. Byttnerioideae | |subfamily=Malvaceae subfam. Byttnerioideae | ||
|genus=Ayenia | |genus=Ayenia | ||
Latest revision as of 22:20, 5 November 2020
Subshrubs, decumbent or erect, 0.2–0.5(–0.9) m. Stems hairy, hairs simple and retrorse or simple and stellate. Leaves: petiole 0.4–1(–1.5) cm; blades of proximal leaves ovate to orbiculate, 0.5–2(–3.2) × 0.2–1(–1.5) cm, distal oblong-ovate to ovate-lanceolate or linear, unlobed, 1–4.3(–7) × 0.2–1(–1.5) cm, base rounded to truncate, margins serrate to doubly serrate or dentate, sometimes ciliate, apex subacute, 3(–5)-veined from base, surfaces usually stellate-puberulent, sometimes glabrescent. Cymes axillary, not borne on short shoots (brachyblasts), 1–3(–11)-flowered; peduncle 2–4(–7) mm. Pedicels 2–4(–7) mm. Flowers: sepals persistent, not reflexed at anthesis, ovate-lanceolate, 1–3 mm, stellate-hairy abaxially; petal claws 2–2.5(–6) mm, lamina subtriangular or rhombic, 1–2.5 × 1–2 mm, base ± attenuate on claw, margins entire, apex notched, surfaces hairy abaxially, hairs simple, multicellular, abaxial appendage filiform to slightly clavate, 0.7 mm; androgynophore 2–3 mm; stamen filaments present; stigmas slightly exserted. Capsules oblate, 2–4 × 5 mm, densely stellate-hairy, prickles 0.5–1 mm. Seeds 2–3 mm, tuberculate.
Phenology: Flowering and fruiting spring–early fall.
Habitat: On limestone and granite soil, steep rocky slopes, canyons, sandy washes
Elevation: 1000–1500 m
Distribution
Ariz., N.Mex., Tex., Mexico (Chihuahua, Sinaloa, Sonora, Zacatecas).
Discussion
In Texas, Ayenia filiformis is known from the trans-Pecos region.
Selected References
None.