. Sensitive plant surveys in the Big Belt and Elkhorn Mountains, Forest Service, Region 1, Helena National Forest, Montana . Rare plants; Rare plants; Rare plants; Botany; Botany; Botany. distinguish from A. diversifolius, and according to Dorn (1984), these two species are one (A. diversifolius). However, Barneby, the monographer of the North American species of Astragalus (1964), recognizes them as two species. According to Barneby (1954), in general A. diversifolius has broader and thinner-textured leaflets, and a broader and shorter pod. Also A. diversifolius occurs in more mesoph
. Sensitive plant surveys in the Big Belt and Elkhorn Mountains, Forest Service, Region 1, Helena National Forest, Montana . Rare plants; Rare plants; Rare plants; Botany; Botany; Botany. distinguish from A. diversifolius, and according to Dorn (1984), these two species are one (A. diversifolius). However, Barneby, the monographer of the North American species of Astragalus (1964), recognizes them as two species. According to Barneby (1954), in general A. diversifolius has broader and thinner-textured leaflets, and a broader and shorter pod. Also A. diversifolius occurs in more mesophytic habitats, and does not occur in Montana (Barneby 1964) though it is found in Idaho close to the Montana border. At the Helena National Forest site. Astragalus convallarius var. convallarius was found with another Astragalus species, A. flexuosus. This species differs from convallarius in not appearing rush- or broom-like as it has numerous (15-21), well-developed leaflets. Although there are three varieties of Astragalus convallarius, only the var. convallarius is found in Montana. D. GEOGRAPHICAL DISTRIBUTION Astragalus convallarius var. convallarius RANGE: Astragalus convallarius var. convallarius is a Great Basin species which ranges from southeastern Idaho east into southwestern Wyoming and then south to northeastern Nevada, most of Utah, and northwestern Colorado (Barneby 1964). There are two pop- ulation clusters in Montana: one in the upper Missouri River valley near Helena (Broadwater and Lewis & Clark Counties) at the northern extent of species distribution, and the other south of Dillon close to the Idaho border in Beaverhead County (Figure 5).. 2. CURRENT SITES: Of the seven known populations in Montana, only one is from the Helena National Forest. This site (EOR# 007) between Beaver Creek and Big Log Gulch in the Helena Ranger District was discovered during the course of the field 17. Please note that these images are extracted from scanned page images that
Size: 2088px × 1197px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, bookcollectionamericana, booksubjectbotany
