Flora of North America species comparison

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Bartsia

velvetbells
Habit Herbs, perennial; hemiparasitic, caudex woody.
Stems

erect, not fleshy, pilose and eglandular at base, hirsute and glandular at apex.
Leaves

basal (scalelike) and cauline (expanded), decussate;

petiole absent;

blade not fleshy, subleathery or not, margins crenate to serrate.
Inflorescences

terminal, racemes;

bracts present.
Pedicels

present;

bracteoles absent.
Flowers

sepals 4, calyx bilaterally symmetric, tubular, lobes triangular;

petals 5, corolla violet to yellow, strongly bilabiate, funnelform, abaxial lobes 3, adaxial 2, adaxial lip galeate;

stamens 4, didynamous, filaments minutely pubescent;

staminode 0;

ovary 2-locular, placentation axile;

stigma subcapitate.
Capsules

dehiscence loculicidal.
Seeds

ca. 50, white, fusiform-cylindric, wings present.
x

= 12.

Bartsia
Distribution
from USDA
ne North America; Europe
[BONAP county map]
Discussion

Species 1.

Until recently, Bartsia included 49 species distributed in North America, South America, Eurasia, and Africa (U. Molau 1990). However, phylogenetic analyses of nuclear and chloroplast genes, obtained using both traditional and high-throughput sequencing, indicate that Bartsia so circumscribed is polyphyletic (S. Uribe-Convers and D. C. Tank 2015, 2016; Uribe-Convers et al. 2016). The type species, B. alpina, is recovered on a branch with no other species of Bartsia; therefore, Bartsia is herein treated as monospecific following Uribe-Convers and Tank (2016). The remaining species of Bartsia have been placed in Bellardia, Hedbergia Molau, and a new South American genus, Neobartsia Uribe-Convers & Tank. Of these, only Bellardia occurs in the flora area.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 488. Authors: Christopher P. Randle, Simon Uribe-Convers.
Parent taxa Orobanchaceae
Subordinate taxa
B. alpina
Name authority Linnaeus: Sp. Pl. 2: 602. (1753) — name conserved: Gen. Pl. ed. 5, 262. (1754) — name conserved
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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