WorldFloraDB - Helianthus salicifolius

Characteristics

Perennials, 150–250+ cm (rhi-zomatous). Stems (green or purplish) erect, glabrous (glaucous). Leaves cauline; alternate; sessile or subsessile; blades linear to lance-linear, 8–21 × 0.2–1.2 cm, bases ± attenuate, margins slightly serrulate to subentire (flat), abaxial faces glabrate, gland-dotted. Heads 6–15+. Peduncles 2–6 cm. Involucres campanulate, 10–18 mm diam. Phyllaries 40–50, linear to lance-linear, 12–20 × 1.8–2 mm, (margins ciliate) apices long-attenuate, abaxial faces glabrous or glabrate, not gland-dotted. Paleae 8–10 mm, entire or weakly 3-toothed (apices greenish, ± hirsute). Ray florets 10–20; laminae 28–35 mm (apices often bifid). Disc florets 50+; corollas 5.5–6 mm, lobes reddish; anthers dark, appendages dark (style branches yellow). Cypselae 4–6 mm, glabrous; pappi of 2 aristate scales 3–3.6 mm plus 2–8 lacerate scales 0.3–0.5 mm. 2n = 34.

More

Perennial with coarse roots and long stout rhizomes; stems 1.5–3 m, glabrous, sometimes glaucous; lvs numerous, commonly alternate except near the base, subglabrous or sparsely hairy, linear or nearly so, long-acuminate, to 20+ cm, seldom over 5(–10) mm wide, about the same color on both sides; disk red-purple (yellow), 1–2 cm wide; invol bracts loose, all subulate or lance-subulate, caudate, usually some of the inner exceeding the disk, glabrous or slightly hairy, often ciliolate; rays 10–20, 1.5–3 cm; 2n=34. Prairies and dry places, especially on calcareous substrate; Mo. to Kans. and Tex., and intr. into O. and n. Ill. Aug.–Oct. (H. orgyalis)

Life form

perennial

Growth form

herb

Growth support

free-standing

Foliage retention

deciduous

Sexuality

hermaphrodite

Pollination

-

Spread

-

Mature width (meter)

0.5 - 1.0

Mature height (meter)

1.5 - 2.5

Root system

rhizome

Rooting depth (meter)

-

Root diameter (meter)

0.4

Flower color

Blooming months

Jan	Feb	Mar
Apr	May	Jun
Jul	Aug	Sep
Oct	Nov	Dec

Fruit color

-

Fruiting months

-

Nitrogen fixer

-

Photosynthetic pathway

-

Environment

Light
Soil humidity
Soil texture
Soil acidity
Soil nutriment	-
Hardiness (USDA)

Usage

Uses	environmental use gene source
Edible	-
Therapeutic use	-
Human toxicity	-
Animal toxicity	-

Cultivation

Can be grown by cuttings, divisions or seedlings.

Mode	cuttings divisions seedlings
Germination duration (days)	10 - 14
Germination temperacture (C°)	-
Germination luminosity	-
Germination treatment	-
Minimum temperature (C°)	-35
Optimum temperature (C°)	-
Size	-
Vigor	-
Productivity	-