Cryptantha mexicana I.M. Johnston
Wrightia 2: 161. 1961


[Cryptantha s.s. HOME]

Pronunciation:
Cryp-tán-tha mex-i-cà-na
Eymology:
of or from Mexico
Synonym:
Krynitzkia mexicana Brandegee, Zoë 5: 182. 1905 (Basionym)
Type:

C. A. Purpus 126, MEXICO: Coahuila de Zaragoza, Viesca, 1903
HOLOTYPE: UC 126836; ISOTYPE: US 474666, barcode 00111058
Diagnostic Features:






Cryptantha mexicana can be distinguished by its ovate-triangular nutlets with coarse, rounded tubercles and interspersed small papillae and a distinctive, triangular, excavated attachment scar in the lower 2/3 of the ventral face. The species is closely related to and has very similar nutlets to C. albida, with C. mexicana differing (according to Johnston 1961) in having more "bristly green herbage, larger ... broader fruiting calyces, ... more elongate, conspicuously bracted cymes ... spring-flowering [as opposed to summer-flowering in C. albida] with several to many dichotomously branching stems ...."

DISTRIBUTION:
LEFT: Kartesz, J.T., The Biota of North America Program (BONAP). 2012. North American Plant Atlas (http://www.bonap.org/MapSwitchboard.html).
Chapel Hill, N.C. [maps generated from Kartesz, J.T. 2010. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP). (in press)].
RIGHT: Encyclodedia of Life.



SPECIMENS:

Purpus 126
US 00111058
Isotype


EXEMPLARS:

[Click on images below to zoom in.]
Cryptantha mexicana I.M. Johnston
Villarreal 5684, 5 Jun 1990 (MO 4011595)
Coahuila, Mexico: 25.000, -101.083, 2000 m.


Cryptantha mexicana
(MO 4011595)
Nutlet, dorsal view
Scale bar = 1 mm


Cryptantha mexicana (MO 4011595)
Nutlet, ventral view
Scale bar = 1 mm


Cryptantha mexicana
(MO 4011595)
Nutlet, side view
Scale bar = 1 mm

Cryptantha mexicana I.M. Johnston
Villarreal 5684, 5 Jun 1990 (MO 4011595)
Coahuila, Mexico: 25.000, -101.083, 2000 m.
[Click on images below to zoom in.]