Libros de rare plants

Seeds native to the Pacific Northwest

Rare vascular plants of Alberta

A catalogue of many new, rare, and fine irises, peonies, oriental poppies, hybrid daylilies in more than 1300 named varieties

Vegetation and flora of the Line Creek Plateau area, Carbon County, Montana

Threatened Cacti of Mexico

New and rare plants

New, rare, and infrequently collected plants in Oklahoma

Effects of grazing on Arabis fecunda

A Vanishing Heritage

American strange, rare, usual and unusual

Garden plants for connoisseurs

Sensitive plants of the Nantahala and Pisgah National Forests. --

Demographic monitoring of Penstemon lemhiensis, Beaverhead National Forest

Report on the conservation status of Grindelia howellii, a candidate threatened species

Preliminary list of mosses, Kootenai National Forest

The IUCN plant red data book

The Rare vascular plants of the Yukon

Clonal propagation of endangered native plants rhododendron chapmanii gray, taxus floridana nutt., and torreya taxifolia arn

Status review of sword townsendia (Townsendia spathulata) and Limestone Hills survey Broadwater County, Montana

Rare camellias, fall 1948 - winter 1949