Participant Info

Species

Alnus incana [Betula alnus var. incana]

Family

Betulaceae

CommonName

grey alder, speckled alder

Presence

YES

Status

native

EarliestDate

1911

LatestDate

2020

Ecosystem

basin, foothill, montane, urban, sanddunes

Geobotanical

SSawatch, Garitas, SSanjuans, Culebras, NCristos, LBasin

Counties

Alamosa, Conejos, Costilla, Hinsdale, Mineral, Rio Grande, Saguache, Archuleta

Passes

Wolf Creek

WildlifePreserves

Big Meadows Reservoir, Great Sand Dunes, Terrace Reservoir

Other Localities

La Botica, Del Norte

PhotoRecords

YES Rich Haswell: Rio Grande Co, Del Norte, by Rio Grande 1 Aug 2016

Comments

Speckled alder is a common tree on both sides of the Valley, often riparian—following rivers and creeks, once down even into the Basin (in Ramalay’s 1931 collection on La Jara Creek near La Jara). The USA distribution of Alnus incana is disjunct: west of the Great Plains and the New England/Great Lakes regions. The tree follows the Rio Grande drainage two thirds of the way into New Mexico.

Annotation