Hasteola

Rafinesque

New Fl. 4: 79. 1838.

Etymology: Latin hasta, spear, and - ola, diminutive, alluding to leaves of type species
Treatment appears in FNA Volume 20. Treatment on page 610. Mentioned on page 543, 611.

Perennials, (50–) 60–240 cm. Stems usually 1, erect (unbranched proximal to heads). Leaves basal and cauline; alternate; petiolate (proximal) or sessile; blades pinnately nerved, broadly deltate or hastate (proximal) to broadly lanceolate, margins doubly-serrate, faces glabrous. Heads discoid, in corymbiform (± flat-topped) arrays. Calyculi of 4–9+ (subulate, rarely leaflike) bractlets. Involucres cylindric or campanulate to obconic, 5–8+ mm diam. (glabrous). Phyllaries persistent, 7–14+ in 1–2 series, erect, distinct, oblong, ± equal, margins chartaceous to scarious. Receptacles slightly convex or flat, foveolate, epaleate. Ray-florets 0. Disc-florets 10–55, bisexual, fertile; corollas usually white or ochroleucous to greenish, rarely pinkish, tubes longer than cylindric throats, lobes 5, erect to spreading, lanceolate; style-branches stigmatic in 2 lines, apices truncate or truncate-penicillate (appendages essentially 0). Cypselae cylindric-fusiform, 8–12-ribbed, glabrous; pappi persistent (fragile), of 100–150+, white, barbellulate bristles. x = 10.

Distribution

e United States

Discussion

Species 2 (2 in the flora).

Asian species that have been assigned to Hasteola belong to Parasenecio.

Key

1 Florets 10–14; proximal cauline leaves deltate Hasteola robertiorum
1 Florets 18–55; proximal cauline leaves hastate to deltate or lanceolate Hasteola suaveolens
... more about "Hasteola"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Loran C. Anderson +
Rafinesque +
decurrent +
hastate;broadly lanceolate +
winged;nerved;ribbed +
pinkish +, ochroleucous +  and greenish +
cylindric-fusiform +
fertile +  and bisexual +
fertile +  and bisexual +
e United States +
Latin hasta, spear, and - ola, diminutive, alluding to leaves of type species +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
campanulate;obconic +
sessile +  and petiolate +
cauline +  and basal +
erect;spreading +
lanceolate +
2-carpellate +
persistent +
unequal +  and subequal +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
anderson1994a +
exalbuminous +
appendaged +  and truncate +
papillate +
Compositae +
Hasteola +
Asteraceae tribe Senecioneae +
cylindric +
50 cm500 mm <br />0.5 m <br /> (60 cm600 mm <br />0.6 m <br />) +
60 cm600 mm <br />0.6 m <br /> (240 cm2,400 mm <br />2.4 m <br />) +
vine +, tree +, shrub +  and subshrub +