Flora of North America species comparison

inconspicuous, slender or stout, unbranched or few-branched.

usually inconspicuous, slender, unbranched or branched.

relatively few, loosely imbricate or more remote, loosely ascending to spreading;

blade oblong-lanceolate to awl-shaped, 2–10 mm, margins entire, often inrolled, apex acuminate, surfaces glabrous.

numerous, appressed;

blade lanceolate or broadly triangular, 3–10 mm, margins entire, sometimes ciliate, apex acute, surfaces glabrous.

of solitary flowers or fascicles of 2(–4) at stem or branch tips, white to cream, sometimes purple tinged, simple, glabrous;

bracts loosely ascending and erect, oblanceolate to broadly ovate, obovate, rhombic, or awl-shaped, 5–12 mm, apex acute to acuminate, glabrous, rarely glandular-pubescent distally.

racemes, sometimes thyrsoid, pale yellow, white, or tan proximally, purple or pale lavender distally, sometimes branched, densely glandular-pubescent, appearing whitish or canescent, sometimes with axillary branches;

flowers numerous;

bracts erect to reflexed, ± lanceolate, 11–20 mm, apex acute or acuminate, densely glandular-pubescent.

(8–)20–110(–170) mm, much longer than plant axis;

bracteoles 0.

0–5 mm, much shorter than plant axis;

bracteoles 2.

calyx white to straw colored or light yellow, or pale to dark, dull purple, sometimes brownish, ± radially symmetric, 4–12(–15) mm, divided into 5 subequal lobes, lobes slightly shorter than to 2 times as long as tube, ± triangular or subulate-triangular, sparsely to moderately glandular-pubescent;

corolla (11–)15–30(–35) mm, tube white to purple, blue, or yellow, sometimes lighter proximally or with light or darker purple or blue veins, slightly to moderately constricted above ovary, ± bent forward, glandular-pubescent;

palatal folds ± prominent, bright yellow, glandular- and/or eglandular-pubescent, sometimes glabrescent;

lips white, yellow, purple, or blue, sometimes with light or darker purple or blue veins, abaxial lip slightly to moderately spreading, sometimes ± recurved distally, (1–)2–6(–9) mm, lobes oblong-obovate to nearly round, apex rounded to bluntly pointed or shallowly emarginate (sometimes with 2 notches), adaxial lip slightly to moderately spreading, sometimes recurved, 2–6(–9) mm, lobes broadly oblong-ovate to oblong-semiorbiculate, apex rounded, rarely bluntly pointed or shallowly emarginate;

filaments glabrous, anthers included, glabrous or villous-tomentose.

calyx pallid externally, purple internally, weakly bilaterally symmetric, 15–21 mm, deeply divided into 5 lobes, lobes lanceolate-attenuate, densely glandular-pubescent;

corolla 22–36 mm, tube white to pallid or cream, sometimes pinkish or light purplish tinged, rarely light yellow distally, sometimes with purple veins, constricted above ovary, only slightly bent forward, densely pubescent;

palatal folds prominent, yellow, densely pubescent;

lips externally white to pallid or cream, sometimes pinkish or light purplish tinged, internally pink or purple, sometimes white with purple veins, rarely light yellow, abaxial lip spreading, 5–9 mm, lobes broadly lanceolate, apex obtuse or rounded, adaxial lip erect or reflexed, 6–12 mm, lobes oblong, apex rounded;

filaments pilose with ring of hairs at insertion, anthers included, woolly.

ovoid to oblong-ovoid, 4–8(–11) mm.

ovoid, 8–12 mm.

0.1–0.4 mm.

0.4–0.5 mm.

= 48.