Tehuacan Valley botanical expedition

Glimpses of the Botanical Diversity of the Valle de Tehuacรกn, Mexico Benjamin T. Wilder University of California, Riverside

Cephalocereus columna-trajani viejito

Photo by Rebecca Wilder

Photosynthesis and Pseudocephalium

Qu ickTim e™ and a d ecompress or are ne ede d to se e th is p ictu re.

Zavala-Hurtado, Vite & Ezcurra 1998

Neobuxbaumia tetetzo tetecho

Neobuxbaumia macrocephala 贸rgano de cabeza roja

Ferocactus robustus

Pachycereus hollianus

baboso

Echinocactus platyacanthus Biznaga, biznaga burra

Beaucarnea gracilis Nolineaceae Pata de elefante, barrig贸n

Mammillaria

Areole A reduced apical meristem derived from leaves, a short shoot

Coryphantha retusa

Hechtia sphaeroblasta

Agave sp.

Dasylirion sp.

Cnidosculus tubulosus Euphorbiaceae Mala mujer

Male

Castela erecta Simaroubaceae

Female

Chapa amarga

Ayenia fruticosa

Cercidium praecox

Dry Season

Selaginella lepidophylla siempreviva

Wet Season

La Ca単ada - Oaxaca

Pachycereus weberi Card贸n, candelabra, chico

21 in the Valle de Tehuacรกn-Cuicatlรกn, 4 endemics

Bursera

Cut trunk of a Copal Bursera- see resin on edge of the wood

Copal for sell at a market in Guatemala

Cloud of incense during a procession during Semana Santa in Antigua, Guatemala

Thanks

Many Photos by Kathryn Larson Phd student at University of Chicago

Questions