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Habit Shrubs, erect, to 2 m. Stems densely stellate-hairy to glabrate, hairs simple, fasciculate, and/or stellate, sometimes minutely stellate, not appressed.
Leaves

petiole (0.4–)2–3.5 cm;

blade broadly ovate to ovate-lanceolate, slightly 3–5-lobed, 2.5–11 × (1.5–)2.5–7.5 cm, noticeably reduced in size distally on stem, base truncate to slightly cordate, margins dentate-serrate, apex acute to attenuate, 5–7-veined from base, surfaces: abaxial densely to sparingly hairy, hairs simple, bifurcate, and/or stellate, not appressed, adaxial sparingly hairy to glabrescent, hairs simple, bifurcate, and/or stellate, not appressed.

Pedicels

5–10 mm.

Flowers

sepals caducous, not present in young fruit, reflexed at anthesis, narrowly ovate-lanceolate, 3–3.5 mm, sparingly stellate-hairy abaxially;

petal claws 2–2.5 mm, lamina ± rhombic, 1 × 1–1.5 mm, base deeply lobed, lobes oblong, margins erose, apex entire, glabrous, abaxial appendage absent;

androgynophore 0.5–1 mm;

stamen filaments absent;

stigmas slightly exserted.

Capsules

oblate to subspheric, 6 × 7 mm, densely short stellate-pubescent, prickles 0.5–1 mm.

Seeds

4 mm, tuberculate.

Cymes

axillary or terminal, not borne on short shoots (brachyblasts), 3–5-flowered;

peduncle 10–20 mm.

Ayenia jaliscana

Phenology Flowering and fruiting late summer–early winter.
Habitat Rocky slopes, canyon bottoms, desert grasslands
Elevation 1100–1200 m (3600–3900 ft)
Distribution
from FNA
AZ; Mexico (Baja California, Baja California Sur, Chihuahua, Sinaloa, Sonora)
[BONAP county map]
Source FNA vol. 6, p. 205.
Parent taxa Malvaceae > subfam. Byttnerioideae > Ayenia
Sibling taxa
A. compacta, A. euphrasiifolia, A. filiformis, A. limitaris, A. microphylla, A. pilosa
Name authority S. Watson: Proc. Amer. Acad. Arts 26: 133. (1891)
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