Agave asperrima var. asperrima

Common names: Rough agave maguey cenizo
Synonyms: Agave caeciliana A. Berger
Treatment appears in FNA Volume 26. Treatment on page 452.

Plants acaulescent, frequently suckering; rosettes not cespitose, 7–10 × 15–20 dm. Leaves spreading to recurved and mostly reflexed, 60–110 × 12–18 cm; blade light green to grayish, without budprints, lanceolate, scabrous, rigid, adaxially plane and deeply guttered from mid-blade to base, abaxially convex; margins straight, toothed, teeth single, usually deflexed along lower leaf edge, 8–15 mm, 1 cm apart; apical spine dark-brown to blackish, subulate to acicular, 3–6 cm. Scape 4–7 m. Inflorescences paniculate, not bulbiferous; bracts persistent, triangular, 3–10 cm; lateral branches 8–14, slightly ascending, comprising distal 1/3 of inflorescence, longer than 10 cm. Flowers 14–18 per cluster, erect, 6–8 cm; perianth yellow, tube cylindric, 13–18 × 14–16 mm, limb lobes erect, subequal, 18–26 mm; stamens long-exserted; filaments inserted just above mid perianth-tube, erect, yellow, 5–6.5 cm; anthers yellow, 24–30 mm; ovary 3–4 cm, neck constricted, 4–6 mm. Capsules short-pedicellate, oblong, 4–5 cm, apex beaked. Seeds 6–7 mm. 2n = 174.


Phenology: Flowering late spring–summer.
Habitat: Sandy to gravelly, often calcareous places in desert scrub
Elevation: 500–1500(–1900) m

Discussion

M. S. Cave (1964) reported chromosome counts of n = 74–93; H. S. Gentry (1982) stated that only one of Cave’s counts applied to var. asperrima and he gave it as n = 87.

Selected References

None.

Lower Taxa

None.

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

longitudinal +
2.4 cm24 mm <br />0.024 m <br /> (3 cm30 mm <br />0.03 m <br />) +
width +  and length +
glandular-pubescent +  and glandular +
papillate +
dark-brown +  and blackish +
subulate +  and acicular +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
James L. Reveal +  and Wendy C. Hodgson +
Jacobi +
armed +  and filiferous +
light green +  and grayish +
convex +, plane +  and lanceolate +
short to long +
thick +  and thin +
persistent +
reflexed +, erect +  and ascending +
triangular +
umbel-like +
short-pedicellate +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Rough agave +  and maguey cenizo +
fibrous-rooted +
Tex. +  and n Mexico +
500–1500(–1900) m +
pubescent +  and glabrous +
5 cm50 mm <br />0.05 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
loculicidal +
oblong +  and ovoid +
Sandy to gravelly, often calcareous places in desert scrub +
10 cm100 mm <br />0.1 m <br /> (?) +
pseudopetiolate +, sessile +  and simple +
evergreen +
60cm;110cm +
12 cm120 mm <br />0.12 m <br /> (18 cm180 mm <br />0.18 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
dentate +, serrulate +  and entire +
Fleshy (?) +, Firm (?) +  and Rigid (?) +
constricted +
0.4 cm4 mm <br />0.004 m <br /> (?) +  and 0.6 cm6 mm <br />0.006 m <br /> (?) +
cylindrical +, ovoid +  and 3-angled +
3 cm30 mm <br />0.03 m <br /> (?) +  and 4 cm40 mm <br />0.04 m <br /> (?) +
succulent +
not +  and articulate +
umbel-like +
semisucculent +
Flowering late spring–summer. +
Hamburger Garten- Blumenzeitung +
not cespitose +
400 cm4,000 mm <br />4 m <br /> (700 cm7,000 mm <br />7 m <br />) +
globose +, obovoid +  and flattened +
semiwoody +
long-exserted +
branched +, , +  and unbranched +
aboveground +
3 +  and 1 +
papillate +
exserted +  and included +
subulate +
Agave caeciliana +
Agave asperrima var. asperrima +
Agave asperrima +
variety +
1 cm10 mm <br />0.01 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
cylindric +
14mm;16mm +
plant +  and suckering +
polycarpic +  and monocarpic +
small;gigantic +
petal-like +