Ayenia compacta

Rose

Contr. U.S. Natl. Herb. 8: 321. 1905.

Common names: California ayenia
Synonyms: Ayenia californica Jepson
Treatment appears in FNA Volume 6. Treatment on page 204.

Subshrubs, erect or decumbent, (0.1–) 0.5–0.8 (–1) m. Stems hairy, hairs stellate, arms appressed. Leaves: petiole 0.5 (–0.8) cm; blades of proximal leaves orbiculate to broadly ovate, 0.3–0.5 × 0.3–0.5 cm, distal ovate to ovatelanceolate, unlobed, 1–1.5 × 0.5–0.9 cm, base rounded to slightly cordate, margins serrate, ciliate, apex obtuse to subacute, 3 (–5) -veined from base, surfaces stellate-hairy. Cymes axillary, not borne on short-shoots (brachyblasts), 1 (or 2) -flowered; peduncle 1–2.5 mm. Flowers: sepals caducous, not present in young fruit, not reflexed at anthesis, ovatelanceolate, 1.5–3 mm, sparingly stellate-pubescent abaxially; petal claws 2–3 mm, lamina rhombic, 1–1.5 × 1.5–3 mm, base attenuate on claw, margins entire, apex notched, surfaces hairy abaxially, hairs simple, multicellular, abaxial appendage cylindric, 0.2–0.3 mm; androgynophore 1–1.5 mm; stamen filaments present; stigmas scarcely exserted. Capsules subglobose, (3.5–) 4.5–5 × 3–4.5 mm, sparingly stellate-pubescent, prickles 0.1–0.3 mm. Seeds 2–2.5 (–2.9) mm, slightly to densely tuberculate. 2n = 20.


Phenology: Flowering and fruiting spring–early fall.
Habitat: Rocky slopes, gravelly or sandy washes, dry canyons
Elevation: 100–1200 m

Distribution

V6 363-distribution-map.jpg

Ariz., Calif., Mexico (Baja California), Mexico (Baja California Sur), Mexico (Sonora)

Discussion

In the United States, Ayenia compacta is known from southernmost California and Arizona; in Mexico, it is found on the Baja California peninsula and in Sonora on islands in the Gulf of California.

Selected References

None.

Lower Taxa

None.

... more about "Ayenia compacta"
not +  and appendaged +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
3(-5)-veined +
protruding +
clavate +, cylindric +  and filiform +
Laurence J. Dorr +
attenuate +, rounded +  and slightly cordate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
orbiculate +  and broadly ovate +
0.3cm;0.5cm +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
septicidal +, loculicidal +  and dehiscence +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
stellate-pubescent +
subglobose +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
filiform +
California ayenia +
not 1-flowered +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
unlobed;ovate;ovatelanceolate +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Ariz. +, Calif. +, Mexico (Baja California) +, Mexico (Baja California Sur) +  and Mexico (Sonora) +
100–1200 m +
sparse;copious +
actinomorphic +
septicidal +, loculicidal +  and dehiscence +
loculicidal +  and septicidal +
subspheric +  and oblate +
Rocky slopes, gravelly or sandy washes, dry canyons +
multicellular +  and simple +
1-11-flowered +  and cymose +
terminal +  and axillary +
connate +  and distinct +
1mm +  and 1.5mm +
1.5mm +  and 3mm +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
erose +  and entire +
entire +  and serrate +
(1-)2-many +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
5 +  and 4 +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Flowering and fruiting spring–early fall. +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Contr. U.S. Natl. Herb. +
septicidal +, loculicidal +  and dehiscence +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
tuberculate +
2mm +  and 2.5mm +
not reflexed +
not absent +
stellate-pubescent +
rounded +  and cylindric +
3-7-veined +  and unarmed +
hairy +  and stellate-hairy +
Ayenia californica +
Ayenia compacta +
species +
decumbent +  and erect +