Leavenworthia crassa

Rollins

Contr. Gray Herb. 192: 62. 1963.

Synonyms: Leavenworthia crassa var. elongata Rollins
Treatment appears in FNA Volume 7. Treatment on page 487. Mentioned on page 486.

Stems (when present) 1–4 dm. Basal leaves: petiole (0.9–) 1.5–3 cm; blade 2.8–6.5 (–8) cm, lobes 1–8 on each side, margins entire or shallowly dentate, terminal lobe orbicular to broadly ovate, 0.5–1.2 (–2) cm × 5–11 (–18) mm, considerably larger than lateral lobes, margins entire or shallowly dentate. Fruiting pedicels: solitary flowers 40–80 mm; racemes 35–70 mm. Flowers: sepals widely spreading, oblong-linear, 4–5.7 × 1–2.1 mm; petals spreading, usually yellow, sometimes white, broadly spatulate to obovate, 9.5–14 × (2.5–) 3–6.7 (–8) mm, claw yellow to orange, 2.5–4 mm, apex deeply emarginate, apical notch 0.5–1 mm deep; filaments: median 4–6 mm, lateral 1.6–3 mm; anthers 0.9–1.3 mm. Fruits subglobose to oblong, (0.6–) 0.8–1.2 (–1.4) cm × (3.5–) 4–5 (–6) mm, smooth, subterete; valves thick; ovules 4–6 (–8) per ovary; style 2.2–5 (–6) mm. Seeds 1.7–3.4 mm diam.; wing 0.2–0.4 mm wide; embryo straight or nearly so. 2n = 22.


Phenology: Flowering Mar–Apr.
Habitat: Limestone cedar glades, pastures, fields, roadsides, near limestone sinks
Elevation: 150-300 m

Discussion

Of conservation concern.

Leavenworthia crassa is known only from Lawrence and Morgan counties.

Lower Taxa

None.

"elongated" is not a number."thick" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Leavenworthia crassa"
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Ihsan A. Al-Shehbaz +  and James B. Beck +
Rollins +
not +  and auriculate +
appendaged +  and unappendaged +
6.5 cm65 mm <br />0.065 m <br /> (8 cm80 mm <br />0.08 m <br />) +
lyrate-pinnatifid +  and entire +
dissected +, repand +, sinuate +, crenate +  and dentate +
much smaller +  and reduced +
2.8 cm28 mm <br />0.028 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
sessile +  and petiolate +
well-developed +
distinct +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
differentiated +
emarginate +  and entire +
150-300 m +
nearly +  and straight +
not winged +  and unappendaged +
connate +  and distinct +
lateral +  and median +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
actinomorphic +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
latiseptate +, stipitate +  and sessile +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
subterete +, subglobose +  and oblong +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Limestone cedar glades, pastures, fields, roadsides, near limestone sinks +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
dentate +  and entire +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
0.67 cm6.7 mm <br />0.0067 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
white +  and yellow +
9.5mm;14mm +
rudimentary +
broadly spatulate +  and obovate +
0.3 cm3 mm <br />0.003 m <br /> (0.67 cm6.7 mm <br />0.0067 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Mar–Apr. +
trinucleate +  and 3(-11)-colpate +
Contr. Gray Herb. +
3.5 cm35 mm <br />0.035 m <br /> (7 cm70 mm <br />0.07 m <br />) +
lloyd1967a +  and lyons1991a +
mucilaginous +
margined +  and winged +
uniseriate +  and biseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
1.7mm;3.4mm +
suborbicular +  and flattened +
persistent +  and caducous +
distinct +
oblong-linear +  and oblong +
0.1 cm1 mm <br />0.001 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
reduced +
latiseptate +, stipitate +  and sessile +
terete +, subterete +, torulose +, linear +  and oblong or subglobose +
latiseptate +, stipitate +  and sessile +
terete +, subterete +, torulose +, linear +  and oblong or subglobose +
tetradynamous +
procumbent +  and decumbent +
descending +, ascending +  and erect +
2-lobed +, entire +, conical +  and capitate +
subsessile +, sessile +  and petiolate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
persistent +
distinct +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Leavenworthia crassa var. elongata +
Leavenworthia crassa +
Leavenworthia +
species +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
orbicular;broadly ovate +
considerably larger +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
scale-like +  and forked +
pubescent +  and glabrous +
anastomosing +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +
0.2mm;0.4mm +
15 +, 12 +  and 11 +