Thymophylla concinna
Sida 11: 376. 1986.
Basionym: Hymenatherum concinnum A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 446. 1884
Synonyms: Dyssodia concinna (A. Gray) B. L. Robinson
Annuals, green, 3–12+ cm, glabrous. Stems spreading to ascending or erect. Leaves alternate; blades 10–15 mm overall, lobed, lobes (3–) 5–9, linear to filiform. Peduncles 1–5+ mm, glabrous. Calyculi 0, or of 1–2 subulate bractlets, lengths less than 1/2 phyllaries. Involucres obconic to campanulate, 5–6.5 mm. Phyllaries 8–16, margins of outer distinct less than 1/2 their lengths, abaxial faces glabrous. Ray-florets 9–12; corollas white to pale-yellow, laminae 3–4 × 1–3.5 mm. Disc-florets ca. 25; corollas pale-yellow, 3–4.5 mm. Cypselae 2.5–3 mm; pappi of 10–15 scales (each comprising 5–9 basally connate bristles) 1–2.5 mm. 2n = 16.
Phenology: Flowering spring, following rains.
Habitat: Sandy washes and flats, in deserts
Elevation: 50–100 m
Distribution
Ariz., Mexico (Sonora)
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Thymophylla concinna"
glabrous +
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
continuous +
decurrent +
lobed +
winged;ribbed;winged;ribbed +
0;1/2 +
subulate +
stigmatic +
20;50 +
absent +
zygomorphic +
monomorphic +
dimorphic +
2.5mm;3mm +
staminate +
straight +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
cylindric +
singly +
discoid +
indeterminate +
surrounding +
obconic;campanulate +
3mm;4mm +
1mm;3.5mm +
alternate +
cauline +
distinct +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
falling +
absent +
glabrous +
tough +
thick +
absent +
connate +
persistent +
distinct +
falling +
unequal +
Sida +
1986 +
pistillate +
absent +
fertile +
epaleate +
convex +
fibrous +
distinct +
exalbuminous +
modifed +
1;2 +
alternate +
branched +
2-branched +
papillate +
Thymophylla concinna +
Thymophylla +
species +
cylindric +
shorter +
much longer +
annual +
glabrous +