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 Mammillaria roemeri (Krüger & Rischer)

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ChrisDavies




Number of posts : 576
Age : 81
Location : Chinnor, UK
Registration date : 2008-07-15

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PostSubject: Mammillaria roemeri (Krüger & Rischer)   Mammillaria roemeri (Krüger & Rischer) Icon_minitimeThu Jul 17, 2008 3:10 pm

FIRST DESCRIPTION: Krüger & Rischer - MafM 26(2): 96 - 102 (2002).
BODY: Depressed globose, sunken apically, solitary or clumping. To 10 - 20 mm high and to 35 mm in diameter.
ROOTS: Taproot, 10 cm long.
SAP: Without latex.
TUBERCLES: Tubercles are conical, somewhat soft, dark green to brownish green, 3 - 4 mm long, 2 - 3 mm in diameter.
AXILS: Axils are naked.
RADIAL SPINES: 25 - 32, radiating, straight or curved, strongly pubescent, glassy white, 1.5 - 2.3 mm long, soft.

CENTRAL SPINES: Absent.

FLOWERS: Funnelform, 13 - 15 mm long and wide, whitish to cream- colored with green flush. Inner petals with pink midveins on the sepals. Stigmas are yellow.

FRUIT: Green, 3 - 4 mm long and 3 mm wide.

SEED: Black, spherical, 1.1 mm long and 0.95 mm in diameter.

HABITAT SUBSTRATE: On limestone slabs and fine gravel.

GEOGRAPHIC DISTRIBUTION: Mexico; Zacatecas.

BIBLIOGRAPHY: AfM 26(2): 96 - 102 (2002).

Mammillaria roemeri (Krüger & Rischer) 35n7l8i
Photo: Chris Davies.

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