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FNA | Family List | FNA Vol. 8 | Ericaceae | Cassiope

2. Cassiope mertensiana (Bongard) G. Don, Gen. Hist. 3: 829. 1834.

Andromedamertensiana Bongard, Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 152, plate 5. 1832

Stems spreading or ascending to erect, forming dense mats, puberulent, glandular-hairy, or glabrous. Leaves imbricate, somewhat appressed to leaf above, usually 4-ranked; blade ovate-lanceolate, abaxial groove absent, 3-4.5 × 1-1.5 mm, margins thin but not scarious, without curled hairs at leaf tips, surfaces glabrous to glandular-hairy or sparsely hairy. Flowers: sepals 2-3 mm, margins entire or erose; petals connate to 1/3 their lengths, tips recurved, corolla white, campanulate, 5-8 mm; stamens to 3 mm. Capsules 1.5-4 mm.

Subspecies 4 (4 in the flora): w North America.

Four subspecies were recognized by Piper, based on differences in pubescence of the stems and leaf margins.

1 Stems hairy, especially when young, glandular hairs absent; leaf blade margins glabrous.   2a Cassiope mertensiana subsp. mertensiana
+ Stems glabrous or sparsely glandular-hairy when young; leaf blade margins glandular-hairy, scattered eglandular-hairy, or glabrous   (2)
2 (1) Leaf blade margins glabrous   2b Cassiope mertensiana subsp. gracilis
+ Leaf blade margins glandular-hairy or scattered eglandular-hairy   (3)
3 (2) Leaf blade margins glandular-hairy; stems glabrous or sometimes sparsely glandular-hairy when young.   2c Cassiope mertensiana subsp. californica
+ Leaf blade margins scattered, branched eglandular-hairy, especially when young; stems glabrous when young.   2d Cassiope mertensiana subsp. ciliolata

Lower Taxa


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