Mexico 2013 Flora de San Luis Potosi y Queretaro

Voucher:AN 408

Euphorbia sphaerorhiza Benth.

Location:San Luis Potosi, Cerro de San Miguelito, above Privadas de Pedregal. Canada de Lobos.
Coordinates: 22°05'34" N, 100°00'18" W Alt: 2250m

Tuberous herb, stems purple-tinged. Inflorescence bracts green with white-toothed apex. Anthers yellow.
Disturbed sandy area grazed by horses and donkeys. Geology: igneous rock. Open area with Poaceae.

Identification Notes: Verified with Rzedwoski, G.C. & J. 2001 'Flora fanerogamica del Valle de Mexico'. Leaves opposite, symetrical lacking stipules. Leaves linear and entire. Cyathia solitary, glands 5, white and with a brown petaloid appendage at base. Ovary and capsule glabrous.

Nova, J.A. de #408      11 June 2013

morphological details

cyathium cyathium cyathium cyathium nectary scale nectary scale
cyathium section cyathium section cyathium cyathium female flower female flower
tuber tuber adaxial leaf surface adaxial leaf surface abaxial leaf surface abaxial leaf surface
field picture
Herbarium voucher
Herbarium voucher

Other field pictures