Kalmia

'' Species and subspecies listed by Plants of the World Online: • Kalmia angustifolia L. - Sheep-laurel, lambkill • Kalmia angustifolia subsp. carolina (Small) A.Haines - Carolina mountain-laurel • Kalmia buxifolia (P.J. Bergius) Gift & Kron - Sandmyrtle • Kalmia cuneata Michx. - Whitewicky • Kalmia ericoides C.Wright ex Griseb. - Cuban kalmia • Kalmia hirsuta Walter - Hairy mountain-laurel • Kalmia latifolia L. - Mountain laurel • Kalmia microphylla (Hook.) A.Heller - Alpine laurel, alpine bog-laurel, alpine mountain-laurel • Kalmia microphylla subsp. occidentalis (Small) Roy L.Taylor & MacBryde • Kalmia polifolia Wangenh. - Bog kalmia, bog-laurel • Kalmia procumbens (L.) Gift, Kron & P.F.Stevens ex Galasso, Banfi & F.Conti Kalmia procumbens was treated as the only species in the genus Loiseleuria in older floras. The related Kalmiopsis leachiana and K. fragrans are rare shrubs endemic to southwest Oregon. File:FFH-Gebiet "Altwarmbüchener Moor" (cropped).JPG|Kalmia angustifolia File:Kalmia buxifolia NRCS-2.jpg|Kalmia buxifolia File:Mountain Laurel - Flickr - treegrow (13).jpg|Kalmia latifolia File:Western Bog Laurel (cropped).jpg|Kalmia microphylla File:Kalmia polifolia.jpg|Kalmia polifolia ==Fossil record==

Fossil leaves of †Kalmia saxonica have been described from the Lower Miocene of Brandis, Germany and Bełchatów, Poland, †'Kalmia marcodurensis have been described from the Lower Miocene of Bitterfeld, Germany. In the Late Tertiary Kalmia was associated with coal-forming vegetation occurring as a component of the vegetation of bush swamps together with Cyrilla and other shrubs. Among recent species Kalmia angustifolia is most similar to †Kalmia saxonica in respect of morphology, while Kalmia latifolia has a very similar epidermal structure. These two extant species grow in the eastern part of North America from (Quebec to Florida) on acid swampy or marshy soils. ==Bibliography==