Heuchera glomerulata |
Heuchera merriamii |
|
---|---|---|
Chiricahua Mountain alum-root |
Canyon Creek alumroot, Merriam's alumroot |
|
Habit | Herbs acaulescent; caudex branched. | Herbs acaulescent; caudex branched or unbranched. |
Flowering stems | 25–40 cm, long stipitate-glandular. |
11–32 cm, long stipitate-glandular or glabrate. |
Leaves | petiole short stipitate-glandular; blade (purple abaxially, variegated adaxially), ovate to orbiculate, shallowly 5-lobed, 2.5–9 cm, base cordate, lobes rounded, margins dentate, apex obtuse, surfaces short stipitate-glandular, long stipitate-glandular on veins abaxially, short stipitate-glandular and sparsely long stipitate-glandular adaxially. |
petiole (2.4–5 cm), moderately long stipitate-glandular; blade orbiculate, reniform, or pentagonal, shallowly 5–7-lobed, 2.5–4.5 cm, base shallowly cordate to truncate, lobes rounded, margins dentate, apex rounded to obtuse, surfaces finely long stipitate-glandular abaxially, sparsely long stipitate-glandular adaxially. |
Inflorescences | dense, (interrupted). |
dense; (bracts linear and scarious to 3–5-parted and herbaceous). |
Flowers | hypanthium radially symmetric, free 0.8–1.2 mm, yellowish green, campanulate, 3.5–5 mm, densely long stipitate-glandular mixed with short stipitate-glandular; sepals erect or incurved at tip, green-tipped, equal, 1.5–2 mm, apex acute; petals erect, white, narrowly oblanceolate, (clawed), unlobed, 1.5–1.8 mm, margins entire; stamens included 0.5 mm; (filaments strongly incurved, slender, shorter than and almost concealed by anthers); styles included 1 mm, to 0.5 mm, 0.1+ mm diam. |
hypanthium radially symmetric, free 0.5–1.5 mm, pink, hemispheric, 3–5.5 mm, (base rounded), densely long stipitate-glandular; sepals erect, green- or red-tipped, equal, 1–2 mm (often wider than long), apex obtuse; petals erect, white, oblanceolate, (clawed), unlobed, 2–3.5 mm, margins entire; stamens exserted 0.8–2 mm; styles exserted 1–2 mm, 1.5–2.5 mm, 0.1+ mm diam. |
Capsules | ovoid, 4–5 mm, beaks divergent, not papillose. |
ovoid, 3–5 mm, beaks divergent, not papillose. |
Seeds | black, fusiform, 0.5 mm. |
dark brown, ellipsoid, 0.6 mm. |
2n | = 14. |
= 14. |
Heuchera glomerulata |
Heuchera merriamii |
|
Phenology | Flowering May. | Flowering Jul–Aug. |
Habitat | Shaded, rocky slopes | Exposed granite ledges in subalpine forests |
Elevation | 1300-2000 m (4300-6600 ft) | 1500-2500 m (4900-8200 ft) |
Distribution |
AZ; NM |
CA; OR
|
Discussion | Heuchera glomerulata occurs in the Chiricahua and Pinaleno mountains of southeastern Arizona and in New Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Heuchera merriamii is known from the Siskiyou and Trinity mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 103. | FNA vol. 8, p. 93. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Rosendahl: Minnesota Stud. Pl. Sci. 2: 155. (1936) | Eastwood: Bull. Torrey Bot. Club 32: 199. 1905 (as merriami), |
Web links |