Calanthe cardioglossa Schltr. 1906 SECTION Preptanthe Photo courtesy
of © David Kuehn .
Common Name The Heart-Shaped Lip Calanthe - In Thailand - Ueang
Flower Size 1" Across [2.5 cm]
Found in Thailand, Laos and Vietnam at elevations of 400 to 1900
meters as a medium sized, hot to cool growing growing terrestrial
with ovoid, pyramidical, 5 to 6 ridged [when dry] pseudobulbs
carrying 3 apical elliptic-lanceolate, acuminate, petiolate leaves
that blooms in the fall on a basal, erect, pubescent, 2 1/2' [75 cm]
long, loosely several to many [10 to 15] flowered inflorescence with
ovate-lanceolate, narrow floral bracts with 10 to 20, showy flowers.
This species and C succedeana are very similar and differ mostly
in that this species has leaves when blooming and has acute sepals
and strong keels on the lip.
Synonyms Calanthe biloba auct. non Lindl. 1900; Calanthe
fuerstenbergiana Krzl. 1927; Calanthe hosseusiana Kraenzl. 1909