Ayenia euphrasiifolia

Grisebach

Cat. Pl. Cub., 29. 1866.

Common names: Dwarf or eyebright ayenia
Synonyms: Ayenia tenuicaulis Urban
Treatment appears in FNA Volume 6. Treatment on page 204.

Subshrubs, decumbent to ascending, 0.1–0.4 m. Stems hairy, hairs mostly simple, often retrorse, sometimes also fasciculate and/or stellate. Leaves: petiole (0.1–) 0.2–0.5 cm; blade orbiculate to ovate, unlobed, 0.4–1.4 × 0.1–0.7 bifurcate, and fasciculate; petal claws 2–3 mm, lamina rhombic to ± triangular, 1 × 1 mm, base attenuate on claw, margins entire, apex notched, surfaces slightly hairy abaxially, hairs minute, simple, or glandlike, abaxial appendage cylindric to ± clavate, 0.5 mm; androgynophore (1–) 2.2–3 mm; stamen filaments present; stigmas exserted. Capsules oblate to subspheric, 4–5 × 4–5 mm, sparingly stellate-pubescent, prickles 0.3–0.5 mm. Seeds 2 mm, densely tuberculate.


Phenology: Flowering and fruiting year-round.
Habitat: Marl over limestone, pinelands, sandy scrub, rocky flats, waste places
Elevation: 0–10 m

Distribution

V6 364-distribution-map.jpg

Fla., West Indies (Bahamas), West Indies (Cuba)

Discussion

In Florida, Ayenia euphrasiifolia is found in the Florida Keys, south and east of Lake Okeechobee, and near Tampa Bay on the mainland.

Three subspecies, two of them endemic, are recognized in Cuba but are not recognized here; they are based on rather weak morphological characters (habit, vestiture, and

leaf texture) ostensibly correlated with vegetation type and soil substrate. If subspecies are accepted, plants in the flora area are subsp. euphrasiifolia.

Selected References

None.

Lower Taxa

None.

... more about "Ayenia euphrasiifolia"
not +  and appendaged +
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
protruding +
clavate +, cylindric +  and filiform +
Laurence J. Dorr +
Grisebach +
attenuate +
bifurcate +, unlobed +, orbiculate +  and ovate +
septicidal +, loculicidal +  and dehiscence +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
stellate-pubescent +
oblate;subspheric +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
filiform +
Dwarf or eyebright ayenia +
Fla. +, West Indies (Bahamas) +  and West Indies (Cuba) +
0–10 m +
sparse;copious +
actinomorphic +
septicidal +, loculicidal +  and dehiscence +
loculicidal +  and septicidal +
subspheric +  and oblate +
Marl over limestone, pinelands, sandy scrub, rocky flats, waste places +
glandlike +  and simple +
stellate +  and fasciculate +
minute +
1-11-flowered +  and cymose +
terminal +  and axillary +
connate +  and distinct +
rhombic +  and more or less triangular +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
erose +  and entire +
(1-)2-many +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
5 +  and 4 +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering and fruiting year-round. +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Cat. Pl. Cub., +
septicidal +, loculicidal +  and dehiscence +
tuberculate +
glandular-hairy +
rounded +  and cylindric +
3-7-veined +  and unarmed +
Ayenia tenuicaulis +
Ayenia euphrasiifolia +
species +
decumbent +  and ascending +