Filed As:

Scrophulariaceae
Penstemon isophyllus B.L.Rob.

All Determinations:

Penstemon isophyllus B.L.Rob. det. F. S. Crosswhite, 1963

Location:

Mexico. Oaxaca. Terribly eroded and overgrazed slope below Pan-Am. Highway at Puerto Herrera (km 420), just nortwest of Vanhuitlan. Alt. 2500 m. (8202 ft.)

Collector(s):

H. H. Iltis 1142 with Robert Koeppen Frank Iltis, 20 Aug 1960

Description:

Flowers in one-sided inflorescences, bright red, with flaring throat and lobes creamy inside, with purplish red streaks, base greenish. 2.5 meters or more tall, very robust and woody stemmed, 2 cm. thick at base with many strict stems from one base. Phenology of specimen: Fertile, Flower.

Habitat:

Terribly eroded and overgrazed slope. Very steep and clayey open Quercus-Arctostaphylos woodland. With shrubby Penstemons, small Agave, few cacti, and many epiphytic Bromeliads (incl. Tillandsia usneoides), Orchidaceae (Encyclia concolor), and Schoenocaulon sp. Several large colonies just below road at very top of Puerto Herrera.

Identifiers:

NY Barcode: 773109
GUID: f714eb09-e340-4585-8b3f-44c2ee27121a

Map:

Coordinates: (17.55, -97.42)

Distribution:

Map all specimens of this taxon
(If georeferenced specimens are available)