Flora of the Canadian Arctic Archipelago

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S.G. Aiken, M.J. Dallwitz, L.L. Consaul, C.L. McJannet, R.L. Boles, G.W. Argus, J.M. Gillett, P.J. Scott, R. Elven, M.C. LeBlanc, L.J. Gillespie, A.K. Brysting, H. Solstad, and J.G. Harris

Mertensia drummondii (Lehm.) G. Don

English: Drummond's Lungwort.

Boraginaceae, Lungwort family.

Published in Gen. Hist. 4: 319. 1838.

Synonymy. Lithospermum drummondii Lehm., Nov. Stirp. Pug. 2: 26. 1830.

Vegetative morphology. Plants 7–15 cm high; perennial herbs. Taproot present. Ground level or underground stems vertical. Caudex present (a stout fusiform, dark brown base). Aerial stems erect, or ascending. Leaves distributed along the stems; alternate; dying annually and non-persistent. Petioles present, or absent (leaves near the inflorescence); 0–30(–50) mm long (basal leaves with conspicuously long petioles); winged, or not winged; flat; glabrous. Leaf blade bases attenuate. Leaves not grass-like. Blades 15–35 mm long, 5–8(–10) mm wide, spreading, oblong or lanceolate or ovate, flat, veins pinnate or appearing single-veined. Blade adaxial surface dull (fresh green), without sessile glands, scabrous, hairs strigose (strigulose, that is, covered with small, straight appressed stiff hairs seen at 10×), hairs simple, hairs moderately dense, hairs white, or translucent. Blade abaxial surface not glaucous, without sessile glands or glandular hairs, glabrous. Blade margins entire (but with strigulose hairs); apices acute.

Reproductive morphology. Flowering stems solitary. Inflorescences corymbose; diffuse. Pedicels present; scabrous (strigulose). Flowers per inflorescence (8–)10–20; medium-sized. Sepals conventional; 5; free (for most of their length), or fused (at the base); 0.9–1.1 mm long; 3.8–4.2 mm wide; green. Calyx bell-shaped; 5-lobed (lobes acute); without sessile glands; hairy (especially on the margins). Calyx hairs strigose; non-glandular; white or translucent. Petals conventional; fused; 5; blue; 10–15 mm long; not spurred. Corolla tubular, or funnel-form (the tube about as long as the calyx); 5-lobed (the lobes rounded). Stamens 5; stamen filaments glabrous (broad at the base, narrow at the anther); fused to the corolla. Anthers yellow (brownish); 1.5–1.7 mm long. Ovary superior; carpels 2 (each divided into two at maturity); partly fused. Ovaries sub-globose; glabrous. Styles 1; 6–10 mm long; straight. Stigmas per ovary 1. Placentation axile. Ovules per ovary 4. Fruit stalked; with calyx persisting; dry; an aggregate of nutlets; spherical; yellowish, or brown; 4.5–5 mm long; 4–5 mm wide; glabrous; surface appearing veinless (but wrinkled, rugulose); not distinctly flattened; schizocarpous. Seeds 4; 3.2–3.5 mm long; yellowish; surfaces smooth.

Chromosome information. 2n = 24.

2n = 24. Dawe and Murray (1981, Alaska).

Ploidy levels recorded 4x.

Ecology and habitat. Substrates: ridges; dry; gravel, sand.

North American distribution. Alaska, Northwest Territories Islands, continental Northwest Territories, Nunavut Islands (?). Range in the Canadian Arctic Archipelago limited (endemic of the arctic coast of western Nunavut and Victoria Island). Rare. Low Arctic. Arctic islands: Victoria.

Northern hemisphere distribution. North American (American Beringian). North Alaska – Yukon, Central Canada.

Illustrations. • Close-up of plant. Flowering plant approximately 12 cm tall with simple, entire leaves and a cymose inflorescence. Nunavut, Cape Young. J.A. Parmalee. CAN 309984. • Arctic Island Distribution.


This publication is available on the internet (posted May 2011) and on CD-ROM (published in 2007). These versions are identical in content, except that the errata page for CD-ROM is accessible on the main index page of the web version.

Recommended citation for the web-based version of this publication: Aiken, S.G., Dallwitz, M.J., Consaul, L.L., McJannet, C.L., Boles, R.L., Argus, G.W., Gillett, J.M., Scott, P.J., Elven, R., LeBlanc, M.C., Gillespie, L.J., Brysting, A.K., Solstad, H., and Harris, J.G. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. NRC Research Press, National Research Council of Canada, Ottawa. http://nature.ca/aaflora/data, accessed on DATE.

Recommended citation for the CD-ROM version of this publication: Aiken, S.G., Dallwitz, M.J., Consaul, L.L., McJannet, C.L., Boles, R.L., Argus, G.W., Gillett, J.M., Scott, P.J., Elven, R., LeBlanc, M.C., Gillespie, L.J., Brysting, A.K., Solstad, H., and Harris, J.G. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. [CD-ROM] NRC Research Press, National Research Council of Canada, Ottawa.

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