Psacalium decompositum
Phytologia 27: 260. 1973.
Illustrated
Basionym: Cacalia decomposita A. Gray Smithsonian Contr. Knowl. 5(6): 99. 1853
Synonyms: Mesadenia decomposita (A. Gray) Standley Odontotrichum decompositum (A. Gray) Rydberg
Treatment appears in FNA Volume 20. Treatment on page 622.
Perennials; caudices thick, tough. Stems subscapiform, densely hairy proximally, sparsely hairy to subglabrous distally. Leaves mostly basal; petiole lengths ± equaling blades; blades ovate or elliptic, 20–30 (–40) cm, nearly as wide, deeply 3–4-pinnatisect, ultimate lobes narrowly triangular to oblong, acute; mid and distal leaves progressively smaller, bractlike. Calyculi: bractlets 2–4 mm. Phyllaries (4–) 5–7 mm. Corollas 7–9 mm. Cypselae 4–5 mm; pappi 4–7 mm. 2n = 60.
Phenology: Flowering summer–early fall.
Habitat: Shady sites, open woodlands
Elevation: 1700–2600 m
Distribution
Ariz., N.Mex., Mexico (Chihuahua), Mexico (Durango), Mexico (Sonora)
Discussion
Psacalium decompositum barely enters the flora area in Arizona and New Mexico.
Selected References
None.
Lower Taxa
None.
"wide" is not a number.
... more about "Psacalium decompositum"
introrse +
connate +
papillate +
rounded-truncate +
scarious +
hispidulous +
papillate +
continuous +
decurrent +
nerved +
acute;elliptic;ovate +
equaling +
winged;nerved;ribbed +
stigmatic +
barbellulate +
persistent +
100;120 +
absent +
tough +
thick +
not 2-lipped +
monomorphic +
[10-]14-18-ribbed +
4mm;5mm +
staminate +
straight +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
discoid +
singly +
indeterminate +
Present +
surrounding +
cylindric;weakly turbinate +
petiolate +
alternate +
basal +
lance-linear +
ascending;spreading +
scarious +
bractlike +
smaller +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
tough +
thick +
absent +
connate +
persistent +
distinct +
herbaceous +
falling +
erect +
subequal +
equal +
Phytologia +
1973 +
absent +
epaleate +
foveolate +
conic;usually flat;convex +
fibrous +
exalbuminous +
modifed +
1;2 +
Illustrated +
alternate +
subscapiform +
clustered +
erect +
single +
continuous +
2-branched +
glabrous +
papillate +
Psacalium decompositum +
Psacalium +
species +
lacking +
campanulate +
longer +
3-4-pinnatisect +
narrowly triangular;oblong +
perennial +