Acleisanthes chenopodioides

(A. Gray) R. A. Levin

Novon 12: 60. 2002.

Illustrated
Basionym: Selinocarpus chenopodioides A. Gray Amer. J. Sci. Arts., ser. 2, 15: 262. 1853
Synonyms: Ammocodon chenopodioides (A. Gray) Standley
Treatment appears in FNA Volume 4. Treatment on page 38. Mentioned on page 34, 37.

Plants herbaceous, overall lightly pubescent with white, T-shaped minute hairs. Stems erect or ascending, sparsely to moderately leafy, 15–40 cm. Leaves dull green when fresh or dry, petiolate, those of a pair very unequal (the smaller often less than 1/2 the size of the larger), gradually reduced toward inflorescence, fleshy; petiole 5–45 mm; blade ovate to ovate-oblong or deltate, 15–50 × 6–40 mm, base rounded to subcordate, margins entire or undulate, apex acute, obtuse, or rounded. Flowers 3–25 in umbellate clusters, in forks of branches and distal axils, and terminal on branches; pedicel 1–4 mm; perianth 4–6 mm, tube greenish pink, limbs pink to lavender, 4–6 mm diam.; stamens 2 (–3), widely spreading. Fruits 5 mm, puberulent with flattened, white hairs; wings 1.5–2 mm wide.


Phenology: Flowering late spring–early fall.
Habitat: Dry, sandy, and gravelly areas, rock, gypseous clay
Elevation: 700-1700 m

Distribution

V4 71-distribution-map.gif

Ariz., N.Mex., Tex., Mexico (Chihuahua)

Discussion

P. C. Standley (1916b) erected Ammocodon to accommodate this primarily morning-blooming species, based on its shorter perianth, fewer stamens, and umbellate inflorescences. B. A. Fowler and B. L. Turner (1977) maintained the genus separate from Selinocarpus. A. Heimerl (1934c) included the species in Selinocarpus, as did V. Bittrich and U. Kühn (1993). R. A. Levin (2000) presented evidence to support the inclusion of this species within a Selinocarpus clade within Acleisanthes, most closely allied to A. somalensis (Chiovenda) R. A. Levin.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

Jackie M. Poole +
(A. Gray) R. A. Levin +
glutinous +
symmetric +  and asymmetric +
rounded +  and subcordate +
unequal +
woody +, leathery +  and fleshy +
Selinocarpus chenopodioides +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
ovate;ovate-oblong or deltate +
? (?) +  and ? (?) +
6mm;40mm +
persistent +
distinct +
lanceolate +
minute +, small +  and not accrescent +
corollalike +  and petaloid +
pedicellate +, short +, sessile +  and few-flowered +
Ariz. +, N.Mex. +, Tex. +  and Mexico (Chihuahua) +
700-1700 m +
curved +  and straight +
pedicellate +, short +  and sessile +
inconspicuous +  and showy +
3 +  and 25 +
cleistogamous +, chasmogamous +  and bisexual +
ellipsoid +  and oblong +
5 cm50 mm <br />0.05 m <br /> (?) +
coriaceous +
Dry, sandy, and gravelly areas, rock, gypseous clay +
flattened +  and t--shaped +
minute +
bracteate +, congested +, open +  and cymose +
axillary +  and terminal +
reduced +  and unequal +
pink +  and lavender +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
5-lobed +
pubescent +  and glabrous +
undulate +  and entire +
expanded +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.4 cm4 mm <br />0.004 m <br /> (?) +
chasmogamous +  and cleistogamous +
constricted +, short +  and elongate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Flowering late spring–early fall. +
rounded +
thick +  and thin +
fibrous;fleshy +
membranaceous +
ribbed +, 10-ribbed +  and 5-ribbed +
pubescent +, glabrous +  and warty +
wrinkled +
Illustrated +
ascending +  and erect +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
woody +  and herbaceous +
fusiform +  and linear +
filiform +
Ammocodon chenopodioides +
Acleisanthes chenopodioides +
Acleisanthes +
species +
gland-tipped +
greenish pink +
domelike +
coriaceous +
1.5mm +  and 2mm +