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14. Cassiope D. Don, Edinburgh New Philos. J. 17: 157. 1834.

锦绦花属 jin tao hua shu

Fang Ruizheng (方瑞征 Fang Rhui-cheng); Peter F. Stevens

Cassiope selaginoides

Credit: Harvard University Herbaria

Shrubs evergreen, dwarf. Stems procumbent or ascending. Leaves decussate, sessile, appressed and crowded, imbricate, usually 4-ranked. Leaf blade small, entire or fimbriate-ciliate, veinless, 1-channeled on back, sometimes plane or convex. Flowers solitary, axillary, pendulous. Pedicel slender, base bracteate; bracteoles absent. Flowers usually 5-merous. Calyx lobes imbricate, subfree. Corolla white or pink, campanulate, lobed or cleft; lobes recurved. Stamens included; filaments straight, flattened; anthers ovate, with two long recurved awns. Ovary superior, glabrous, with many ovules per locule. Capsule depressed-globose, each valve 2-cleft at apex. Seeds many, minute, wingless.

About 17 species: circumboreal, extending south into China, the Himalayan region, Japan, Russia, and W North America; 11 species (six endemic) in China.

1 Leaf blade not furrowed abaxially.   (2)
+ Leaf blade ± deeply furrowed abaxially.   (4)
2 (1) Leaf blade plane, margin incrassate, setulose.   3 Cassiope palpebrata
+ Leaf blade abaxially convex, margin hyaline membranous.   (3)
3 (2) Leaf blade elliptic, abaxially densely setulose, apex with a membranous acumen much shorter than blade.   1 Cassiope myosuroides
+ Leaf blade elliptic to suborbicular, abaxially subglabrous, apex with a membranous acumen ca. as long as or longer than blade.   2 Cassiope membranifolia
4 (1) Furrow only to 1/3–1/2 blade length.   4 Cassiope abbreviata
+ Furrow reaching near apex of leaf blade.   (5)
5 (4) Leaf blade with membranous margin.   (6)
+ Leaf blade without membranous margin.   (8)
6 (5) Leaf blade abaxially sparsely silvery pubescent, margin rust-brown colored, membranous and brown flattened-setulose; pedicels 5–25 mm.   7 Cassiope argyrotricha
+ Leaf blade abaxially glabrous, margin silvery, membranous and ciliolate; pedicels 1–7 mm.   (7)
7 (6) Leaf blade 4–6 mm, 0.5–1 mm apiculate.   5 Cassiope fastigiata
+ Leaf blade 2.5–4 mm, apex obtuse, not apiculate.   6 Cassiope fujianensis
8 (5) Leaves sometimes lax; leaf blade ovate-triangular, 2–3 mm, margin fringed with wool-like hairs and glabrescent.   8 Cassiope selaginoides
+ Leaves densely imbricate; leaf blade oblong, (2–)4–7 mm, margin barbellate or setulose.   (9)
9 (8) Leaf blade with densely setulose margin, hairs solitary or 2 or 3 together, to 2–3 mm, each with scattered short stiff barbules, adaxially ± plane.   9 Cassiope wardii
+ Leaf blade with rigidly pubescent, barbellate margin, adaxially concave.   (10)
10 (9) Leaf blade oblong-elliptic, 2–4 mm, base arching, abaxially with shallow subtriangular glabrous furrow.   10 Cassiope nana
+ Leaf blade oblong-linear, 5–7 mm, base 2-lobed, abaxially with deep narrow densely puberulous furrow.   11 Cassiope pectinata

  • List of lower taxa


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