Tripterocalyx micranthus

(Torrey) Hooker

Hooker’s J. Bot. Kew Gard. Misc. 5: 261. 1853.

Endemic
Basionym: Abronia micrantha Torrey in J. C. Frémont, Rep. Exped. Rocky Mts., 92. 1843
Treatment appears in FNA Volume 4. Treatment on page 70.

Stems reddish, glandular-pubescent, ± viscid. Leaves: petiole 1–4 cm; blade lanceovate to elliptic, 1–6 × 0.5–2.5 cm, margins entire or sinuate, ciliate; surfaces short glandular-pubescent, ± viscid, abaxial surface green or glaucous, adaxial surface green. Inflorescences 5–15-flowered; bracts lanceolate to ovate, 3–9 × 1–3 mm, thin and green or ± papery, base ± attenuate, margins glandular-puberulent, often ciliate, or glabrate to lightly glandular-puberulent. Perianth: tube greenish to pink, 6–18 mm, limb greenish to pink, 3–5 mm diam., lobes inconspicuous. Fruits oval to round in profile, 10–20 × 10–20 mm, walls ± spongy on exterior, indurate on interior, ± smooth to rugose; lateral ribs, if extending into wings, only slightly raised; wings (2–) 3 (–4).


Phenology: Flowering spring–fall.
Habitat: Sandy soils, desert scrub, desert grasslands
Elevation: 800-2400 m

Distribution

V4 146-distribution-map.gif

Alta., Sask., Ariz., Calif., Colo., Kans., Mont., Nev., N.Mex., N.Dak., S.Dak., Utah, Wyo.

Discussion

The names Abronia cycloptera A. Gray and Tripterocalyx cyclopterus (A. Gray) Standley are illegitimate, based on an attempt by Gray to rename A. micrantha Torrey. Gray believed A. micrantha to be a “precociously fertilized state” of what is here recognized at T. carneus.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Tripterocalyx micranthus"
Leo A. Galloway +
(Torrey) Hooker +
glutinous +
attenuate +
unequal +
woody +, leathery +  and fleshy +
Abronia micrantha +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lanceovate;elliptic +
0.5cm;2.5cm +
persistent +
distinct +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
lanceolate +  and ovate +
not accrescent +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
corollalike +  and petaloid +
Alta. +, Sask. +, Ariz. +, Calif. +, Colo. +, Kans. +, Mont. +, Nev. +, N.Mex. +, N.Dak. +, S.Dak. +, Utah +  and Wyo. +
800-2400 m +
curved +  and straight +
inconspicuous +  and showy +
1 +  and 80 +
chasmogamous +  and bisexual +
10mm;20mm +
glabrous +  and puberulent +
oval +  and round +
spongy +  and indurate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Sandy soils, desert scrub, desert grasslands +
unequal +
greenish +  and pink +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
4-5-lobed +
inconspicuous +
glabrate +  and lightly glandular-puberulent +
sinuate +  and entire +
expanded +  and constricted +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering spring–fall. +
Hooker’s J. Bot. Kew Gard. Misc. +
rounded-conic;flat to somewhat +
thick +  and thin +
fibrous;fleshy +
membranaceous +
ribbed +, 10-ribbed +  and 5-ribbed +
pubescent +, glabrous +  and warty +
wrinkled +
decumbent +  and semierect +
fusiform +  and linear +
filiform +
rugose +  and smooth +
glandular-pubescent +
Stout (?) +  and Slender (?) +
Tripterocalyx micranthus +
Tripterocalyx +
species +
gland-tipped +
greenish;pink +
0.6 cm6 mm <br />0.006 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
indurate +  and spongy +
viscid-pubescent +  and nearly glabrous +
scarious +