Blennosperma

Lessing

Syn. Gen. Compos., 267. 1832.

Etymology: Greek blennos, mucus, and sperma, seed, alluding to cypselae becoming mucilaginous when wetted
Treatment appears in FNA Volume 20. Treatment on page 640. Mentioned on page 541.

Annuals, 3–12 (–30) cm (taprooted). Stems usually 1, erect (usually branched ± throughout). Leaves (sometimes ± fleshy) basal and cauline; alternate; mostly sessile; blades pinnately nerved, linear (or pinnately divided into 2–15 linear lobes), ultimate margins entire, faces glabrous or sparsely floccose-tomentose. Heads radiate, borne singly. Involucres ± hemispheric, 3–6+ mm diam. Phyllaries persistent, 5–13+ in ± 2 series, ± erect (inflexed in late flowering, reflexed in fruit), basally connate, elliptic to ovate, subequal, ± membranous (veiny, tips usually purple). Receptacles flat to convex, smooth or foveolate, epaleate. Ray-florets 5–13+, pistillate (sometimes, some pistillate florets lack corollas); corollas sessile (lacking tubes), usually yellow, rarely white (often purplish abaxially, laminae ovate to linear). Disc-florets 20–60 (–100+), functionally staminate; corollas yellow, tubes shorter to longer than campanulate throats; lobes 5, ± erect, deltate to lanceolate; styles not divided. Cypselae ± ellipsoid, usually 5–6 (–10) -ribbed or angled, usually papillate (papillae becoming mucilaginous when wetted); pappi 0. x = 9.

Distribution

Calif., South America (Chile)

Discussion

Species 3 (2 in the flora).

Key

1 Proximal leaves not lobed or 2–3(–5)-lobed; stigmas of ray florets red Blennosperma bakeri
1 Proximal leaves usually 5–15-lobed, rarely entire; stigmas of ray florets yellow Blennosperma nanum
... more about "Blennosperma"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
Lessing +
decurrent +
winged;nerved;ribbed +
barbellulate +  and smooth +
yellow +  and white +
papillate +
angled +, 5-6(-10)-ribbed +  and ellipsoid +
fertile +  and bisexual +
Calif. +  and South America (Chile) +
Greek blennos, mucus, and sperma, seed, alluding to cypselae becoming mucilaginous when wetted +
floccose-tomentose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
hemispheric +
cauline +  and basal +
deltate +  and lanceolate +
dentate to pinnatifid +  and entire +
2-carpellate +
elliptic +  and ovate +
Syn. Gen. Compos., +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
foveolate +  and smooth +
flat;convex +
ornduff1964a +
exalbuminous +
appendaged +  and truncate +
papillate +
not divided +
Compositae +
Blennosperma +
Asteraceae tribe Senecioneae +
campanulate +
shorter to longer +
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
vine +, tree +, shrub +  and subshrub +