Lyonothamnus floribundus

A. Gray

Proc. Amer. Acad. Arts 20: 292. 1885.

Conservation concernEndemicIllustrated
Synonyms: Lyonothamnus aspleniifolius Greene L. floribundus subsp. aspleniifolius (Greene) P. H. Raven L. floribundus var. aspleniifolius (Greene) Brandegee
Treatment appears in FNA Volume 9. Treatment on page 346.

Leaves: petiole 12–35 mm, often distally winged, wings often lobed, base attenuate to rounded; in lobed blades, lobes oblong-rounded to broadly falcate-acute or almost triangular, base broadly sessile along axes, margins near bases often overlapping, surfaces: abaxial tomentose, tardily glabrescent, adaxial tomentulose, soon glabrescent. Flowers: sepals 1.5–2 mm; stamens 2 mm, filaments unequal. 2n = 54.


Phenology: Flowering May–Jul.
Habitat: Canyons, ravines, ridges, and slopes in chaparral, oak woodlands, openings
Elevation: (20–)100–500+ m

Discussion

Of conservation concern.

On Santa Catalina Island, most plants of Lyonothamnus floribundus have most leaves not divided into leaflets and have been called forma, subsp., or var. floribundus. Plants with most leaves palmately or pinnately divided, usually with 3–5(–7), pinnately lobed leaflets, have been called forma, subsp., or var. aspleniifolius; such plants are known from San Clemente, Santa Catalina, Santa Cruz, and Santa Rosa islands. Continuity of variation in leaf form in L. floribundus has been documented by T. S. Brandegee (1890) and others. J. M. Bushakra et al. (1999) noted genetic similarity among clones.

Selected References

None.

Lower Taxa

None.
... more about "Lyonothamnus floribundus"
glabrescent +  and tomentose +
glabrescent +  and tomentulose +
John L. Strother +
A. Gray +
gray +  and brown +
compound +  and simple +
opposite +  and alternate +
overlapping +
attenuate +  and rounded +
simple +, pinnate +  and palmate +
oblong +, lanceolate +  and lance-linear +
6 cm60 mm <br />0.06 m <br /> (18 cm180 mm <br />0.18 m <br />) +
free +  and distinct +
tomentulose +
not +  and aggregated +
(20–)100–500+ m +
rounded +
pilose +  and tomentulose +
papillate +  and smooth +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
unisexual +  and bisexual +
stipitate-glandular +
less ovoid +  and lanceoloid +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not +  and aggregated +
not +  and aggregated +
Canyons, ravines, ridges, and slopes in chaparral, oak woodlands, openings +
tomentulose +, glabrate +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
crassinucellate +
compound +  and simple +
deciduous +  and persistent +
lobed +, oblong +, lanceolate +  and lance-linear +
6 cm60 mm <br />0.06 m <br /> (18 cm180 mm <br />0.18 m <br />) +
triangular +, oblong-rounded +  and broadly falcate-acute +
serrate +, crenulate +, entire +  and revolute +
inferior +  and superior +
biseriate +  and clustered +
2 +  and 4 +
0 (?) +  and 4 (?) +
free +  and distinct +
1.2 cm12 mm <br />0.012 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering May–Jul. +
adnate +, free +, connate +  and distinct +
Proc. Amer. Acad. Arts +
not arillate +
less ellipsoid;fusiform +
persistent +
free +  and distinct +
ovate +  and triangular +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Conservation concern +, Endemic +  and Illustrated +
free +  and distinct +
shorter or longer +
branched +  and simple +
deciduous +  and persistent +
distinct +
basal +, lateral +, subterminal +  and terminal +
not elongate +
Lyonothamnus aspleniifolius +, L. floribundus subsp. aspleniifolius +  and L. floribundus var. aspleniifolius +
Lyonothamnus floribundus +
Lyonothamnus +
species +
inconspicuous +
plant +  and clonal +