Leibnitzia

Cassini in F. Cuvier

in F. Cuvier, Dict. Sci. Nat. ed. 2, 25: 420. 1822.

Etymology: For G. W. Leibnitz, 1646–1716, philosopher, political advisor, mathematician, and scientist
Treatment appears in FNA Volume 19. Treatment on page 80. Mentioned on page 12, 14, 57, 70, 71.
 TaxonIllustrator 
FNA19 P02 Gochnatia hypoleuca.jpegGochnatia hypoleuca
Adenocaulon bicolor
Chaptalia tomentosa
Leibnitzia lyrata
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey

Perennials, 5–60+ cm (fibrous-rooted; stems 1–11, scapiform, sometimes bracteate). Leaves basal; petiolate; blades elliptic to obovate, oblanceolate, or lyrate, bases cuneate, margins usually sinuately lobed to dentate, sometimes entire or pinnatifid, abaxial faces thinly gray-tomentose [covered with dense wool], adaxial faces glabrous or glabrescent (vernal leaves appearing after or concurrently with first heads). Heads quasi-radiate (see florets), borne singly (erect in bud, flowering, and fruit). Involucres cylindric to campanulate, 9–20+ mm. Phyllaries in 3–4+ series, lanceolate to lance-linear, unequal, apices acute to acuminate. Receptacles flat to convex, foveolate to alveolate, glabrous, epaleate. Florets: outer 6–15 pistillate, fertile, corollas usually pinkish to purplish (vernal with relatively broad laminae ± equaling tubes and bifurcate inner lips, autumnal with relatively narrow, greatly shortened laminae); inner 6–20+ florets bisexual, fertile, corollas usually whitish (vernal funnelform, 2-lipped, lobes 5, recurved or coiled, autumnal narrowly tubular, barely 2-lipped or nearly actinomorphic, lobes 5, erect); anther basal appendages entire, apical appendages lanceolate; style-branches relatively short, apices rounded to truncate (abaxial faces pilose). Cypselae ± fusiform (somewhat flattened), distally ± constricted into relatively broad necks or narrow beaks 1/5–1/3+ lengths of bodies, ribs [5–] 8+, faces strigose to hispid (hairs duplex, relatively long, apices sharp-pointed), not glandular; pappi of 50–80+ stramineous, barbellulate bristles. x = 23.

Distribution

United States, Mexico, Asia

Discussion

species 6 (1 in the flora).

Two species of Leibnitzia occur in North America (one is restricted to western Mexico); the remaining four are Asian. The species are characterized by dimorphic heads: those produced in the spring appear before or with the leaves and are chasmogamous and quasi-radiate; the fall forms appear after the leaves and are cleistogamous (not exposing any florets but setting full fruit). The florets also differ morphologically between the chasmogamous and cleistogamous heads. The widespread American species (L. lyrata) has been placed within Chaptalia; species of Leibnitzia are distinguished from all Chaptalia species by the slender, sharp-pointed hairs on their cypselae.

Species 6 (1 in the flora).

Lower Taxa

"broad" is not a number.

... more about "Leibnitzia"
pinnatifid +, entire +  and lobed to dentate +
glabrescent +  and glabrous +
rounded;truncate +
scarious +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Guy L. Nesom +
Cassini in F. Cuvier +
cuneate +
compound +  and simple +
elliptic;obovate oblanceolate or lyrate +
ribbed;smooth +
actinomorphic +  and zygomorphic +
whitish +, usually pinkish +  and purplish +
constricted +
United States +, Mexico +  and Asia +
For G. W. Leibnitz, 1646–1716, philosopher, political advisor, mathematician, and scientist +
strigose +  and hispid +
pistillate +, staminate +  and neuter +
fertile +  and bisexual +
winged +  and beaked +
dispersed +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
cylindric;campanulate +
0.9 cm9 mm <br />0.009 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2-carpellate +
persistent +
connate +  and distinct +
in F. Cuvier, Dict. Sci. Nat. ed. +
foveolate +  and alveolate +
flat;convex +
nesom1983a +
barbellulate +  and smooth +
plumose +, subulate +  and setiform +
exalbuminous +
prostrate +  and ascending +
appendaged +  and truncate +
hairy +  and glabrous +
papillate +
Compositae +
Leibnitzia +
Asteraceae tribe Mutisieae +
5 cm50 mm <br />0.05 m <br /> (60 cm600 mm <br />0.6 m <br />) +
shrub +  and subshrub +