Porophyllum scoparium
Smithsonian Contr. Knowl. 3(5): 119. 1852.
Treatment appears in FNA Volume 21. Treatment on page 234.
Subshrubs or shrubs, 20–60+ cm; internodes mostly 10–30 mm. Leaf-blades mostly filiform, 10–40 × 1–2 mm. Phyllaries 7–10, oblanceolate to linear, 6–10 mm. Florets mostly 40–80+; corollas yellow, 5–8 mm. Cypselae 3.5–5.5 mm; pappi: longer bristles 6–7.5 mm. 2n = 24.
Phenology: Flowering spring–fall.
Habitat: Sandy, gravelly, and rocky sites, calcareous or igneous soils, with desert scrub
Elevation: 500–1400 m
Distribution
N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Nuevo León)
Discussion
Selected References
None.
Lower Taxa
None.
"fine" is not a number.
... more about "Porophyllum scoparium"
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
continuous +
decurrent +
orbiculate;linear or filiform +
winged;ribbed;winged;ribbed +
1;22 +
stigmatic +
50;100 +
25;50 +
coarse +
absent +
zygomorphic +
yellow +
monomorphic +
dimorphic +
3.5mm;5.5mm +
staminate +
straight +
glabrous +
distinct +
proximal +
40;80 +
bisexual +
dispersed +
cylindric +
singly +
discoid +
indeterminate +
surrounding +
cylindric;campanulate +
filiform +
1mm;2mm +
cauline +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
falling +
absent +
coroniform +
tough +
thick +
absent +
connate +
persistent +
distinct +
falling +
unequal +
Smithsonian Contr. Knowl. +
1852 +
pistillate +
absent +
fertile +
epaleate +
pitted +
convex;conic +
fibrous +
exalbuminous +
modifed +
1;2 +
alternate +
branched +
erect +
2-branched +
papillate +
Porophyllum scoparium +
Porophyllum +
species +
cylindric +
stout +
much shorter +
much longer +