Cassiope mertensiana

(Bongard) G. Don

Gen. Hist. 3: 829. 1834,.

IllustratedEndemic
Basionyms: Andromeda mertensiana Bongard Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 152, plate 5. 1832
Treatment appears in FNA Volume 8. Treatment on page 447. Mentioned on page 446.

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 ovatelanceolate, 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.

Distribution

V8 882-distribution-map.gif

Alta., B.C., Alaska, Calif., Idaho, Mont., Nev., Oreg., Wash.

Discussion

Subspecies 4 (4 in the flora).

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

Selected References

None.

Key

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

"/3" is not declared as a valid unit of measurement for this property.

... more about "Cassiope mertensiana"
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Gary D. Wallace +
(Bongard) G. Don +
furrowed +  and smooth +
not flaky +
Andromeda mertensiana +
ovatelanceolate +
expanded +
coriaceous +
subglobose +  and ovoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
rotate to crateriform campanulate cylindric globose or urceolate +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Alta. +, B.C. +, Alaska +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +  and Wash. +
undifferentiated +
fusiform +
not enlarged +
unisexual +  and bisexual +
loculicidal +
multicellular +
4-ranked +  and imbricate +
persistent +
erose +  and entire +
revolute;plane;toothed;entire;revolute;plane;toothed;entire +
parietal +, axile +  and placentation +
subglobose +  and ovoid +
tenuinucellate +  and unitegmic +
elongating +
0 cm0 mm <br />0 m <br /> (?) +
reduced +
not sticky +
4-5-carpellate +
distinct +
ellipsoid +  and ovoid +
distinct +
oblong-ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Illustrated +  and Endemic +
mat-forming +
prostrate +  and decumbent +
ascending +  and erect +
peltate +  and capitate +
straight +
cylindric +
glabrous +  and glandular-hairy or sparsely hairy +
Undefined tribe Cassiopeae +
Cassiope mertensiana +
Cassiope +
species +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +