Flora of North America species comparison

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Ayenia filiformis

trans-Pecos ayenia
Habit 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.
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.
Cymes

axillary, not borne on short shoots (brachyblasts), 1–3(–11)-flowered;

peduncle 2–4(–7) mm.

Ayenia filiformis
Phenology Flowering and fruiting spring–early fall.
Habitat On limestone and granite soil, steep rocky slopes, canyons, sandy washes
Elevation 1000–1500 m (3300–4900 ft)
Distribution
from FNA
AZ; NM; TX; Mexico (Chihuahua, Sinaloa, Sonora, Zacatecas)
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[BONAP county map]
Discussion

In Texas, Ayenia filiformis is known from the trans-Pecos region.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 6, p. 205.
Parent taxa Malvaceae > subfam. Byttnerioideae > Ayenia
Sibling taxa
A. compacta, A. euphrasiifolia, A. jaliscana, A. limitaris, A. microphylla, A. pilosa
Synonyms A. cuneata, A. reflexa
Name authority S. Watson: Proc. Amer. Acad. Arts 24: 42. (1889)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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