Agave mckelveyana

Gentry

Cact. Succ. J. (Los Angeles) 42: 225, figs. 4–6. 1970.

Common names: McKelvey agave
Treatment appears in FNA Volume 26. Treatment on page 459. Mentioned on page 446.

Plants acaulescent, solitary or sparsely suckering; rosettes 2–4.5 × 3–6 dm, rather open. Leaves spreading, broadest at middle, 17.5–40 × 2.8–5 cm; blade light glaucous green or yellowish green to dark green, usually cross-zoned, linearlanceolate to lanceolate, rigid, adaxially concave, abaxially convex; margins straight or undulate to crenate, armed, teeth single, firmly attached, well defined, 4–8 mm, 1–3 cm apart; apical spine reddish-brown to gray, subulate, 1.5–4 cm. Scape 2–5 m. Inflorescences paniculate, not bulbiferous, open; bracts persistent, triangular, 0.5–2 cm; lateral branches 10–19, ascending, comprising distal (1/4–) 1/3–1/2 of inflorescence, longer than 10 cm. Flowers 6–12 per cluster, erect, 3–4 cm; perianth light yellow, tube shallow, broadly campanulate, 2–4.5 × 8–10.5 (–18) mm, limb lobes wilting soon after anthesis, spreading, equal or subequal, 11–13 mm; stamens long-exserted; filaments inserted near or at top of perianth-tube, erect, yellow, 2.5–3.3 cm; anthers yellow, (7–) 9–16 mm; ovary 1.6–2.2 cm, neck slightly constricted, 1–2.5 mm. Capsules short-pedicellate, narrowly oblong to oblong, 3–4.5 cm, apex beaked. Seeds 5–6.5 mm.


Phenology: Flowering mid spring–mid summer.
Habitat: Sandy to gravelly or rocky places with desert scrub, chaparral and pinyon-juniper woodlands
Elevation: 800–2200 m

Discussion

Agave mckelveyana may hybridize with A. deserti var. simplex and A. utahensis var. utahensis in Arizona.

Selected References

None.

Lower Taxa

None.

"broadened" is not a number."broadest" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Agave mckelveyana"
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
longitudinal +
0.9 cm9 mm <br />0.009 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
width +  and length +
glandular-pubescent +  and glandular +
papillate +
reddish-brown +  and gray +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
James L. Reveal +  and Wendy C. Hodgson +
Gentry +
armed +  and filiferous +
cross-zoned +, yellowish green +  and dark green +
convex +, concave +  and lanceolate +
short to long +
thick +  and thin +
persistent +
reflexed +, erect +  and ascending +
triangular +
umbel-like +
short-pedicellate +
narrowly oblong +  and oblong +
3 cm30 mm <br />0.03 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
McKelvey agave +
fibrous-rooted +
800–2200 m +
pubescent +  and glabrous +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
loculicidal +
oblong +  and ovoid +
Sandy to gravelly or rocky places with desert scrub, chaparral and pinyon-juniper woodlands +
open +  and not bulbiferous +
1/4 +  and 1/3-1/2 +
10 cm100 mm <br />0.1 m <br /> (?) +
pseudopetiolate +, sessile +  and simple +
evergreen +
17.5cm;40cm +
1.1 cm11 mm <br />0.011 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
dentate +, serrulate +  and entire +
undulate to crenate +  and straight +
Fleshy (?) +, Firm (?) +  and Rigid (?) +
2.8 cm28 mm <br />0.028 m <br /> (5 cm50 mm <br />0.05 m <br />) +
constricted +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.25 cm2.5 mm <br />0.0025 m <br /> (?) +
cylindrical +, ovoid +  and 3-angled +
1.6 cm16 mm <br />0.016 m <br /> (?) +  and 2.2 cm22 mm <br />0.022 m <br /> (?) +
succulent +
not +  and articulate +
umbel-like +
semisucculent +
Flowering mid spring–mid summer. +
Cact. Succ. J. (Los Angeles) +
200 cm2,000 mm <br />2 m <br /> (500 cm5,000 mm <br />5 m <br />) +
globose +, obovoid +  and flattened +
semiwoody +
long-exserted +
branched +, , +  and unbranched +
aboveground +
3 +  and 1 +
papillate +
exserted +  and included +
subulate +
Agave mckelveyana +
species +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.05 cm10.5 mm <br />0.0105 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
shallow +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
campanulate +
8mm;10.5mm +
plant +, suckering +  and solitary +
polycarpic +  and monocarpic +
small;gigantic +
petal-like +