Eryngium. 
179 
elongalo 12 — 15 min longo, rigido, ± profunde 3 — 4-partito (segin. prophyllis sirnil.) exiniie 
cornula; bracleac involucrales zb 10, lineari-subulatae, inlegerrimae, pungenli-acutissiinae, 
rigidae, eapitulis longiores; florales angustissiniae rigidulae, basi vix dilatatae, 2^ — 3 mm 
longae, llores fructusque manifeste superantes. Flores numerosi; sepala brevissima, 
lanceolata, obtusiuscula, breviter mucronata; petala azurea, a dorso late oblriangularia, 
papillulosa, lobulo inflexo dimidio breviore, apice denticulato, vix 1 mm longa. Fruclus 
cubico-semlglobosus, 1 '|^ mm longus, ubique squamis vesiculosis subaequalibus, ad sepala 
versus vix majoribus veslilus. 
Provinz des mexikanischen Hochlandes: Mexiko: Cliihuahua, in seichten 
Teichen am Fuße der Sierra Madre (Pringle, PI. mex. n. 2009 — blühend im Sep- 
tember). 
Fig. 30. Eryngium mexicanum Wals. A Habitus. — B Capitulum. — C Fruclus. — D l’o- 
taluni. (Icon, origin.) 
Sect. XXll. Petiolata Wolff. 
Petiolata Wolfl'. — Plantae perennes (an species nonnullae semel tantum florentes?). 
Gaulis erectus elatus, simplex vel pauciramosus, apice trifurcatus, ramis indivisis vel usque 
ter trifurcato-divisis. Folia plerumque abrupte et longe petiolata; lamina indivisa, 
margine serrata vel crenata vel serralo-crenata, nervis paiicis e basi subpalmatis vel 
in aream angustam dispositis percursa. Inflorescentia saepissime colorata. Bracteae 
1 - 2 * 
