Description
(
英語
)
由eFloras提供
Annuals, 20–100 cm, herbaceous or suffrutescent. Leaf blades oblanceolate to oblong or oblong-lanceolate, mid-cauline (1–)4–15(–25) mm wide. Heads on short, sometimes bracteate peduncles, not surpassed by distal leaves. Involucres (4.5–)6–9 × 9–15(–20) mm. Phyllaries in 3–4 series, loose, strongly unequal, apices broadly spreading to squarrose, ca. 0.9–1 mm wide, herbaceous. Ray florets (13–)20–36; corollas 6–11(–14) mm. Disc florets: corolla tubes ± equaling limbs. 2n = 12.
- 許可
- cc-by-nc-sa-3.0
- 版權
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
英語
)
由eFloras提供
Sideranthus annuus Rydberg, Bull. Torrey Bot. Club 31: 653. 1905; Haplopappus annuus (Rydberg) Cory; Machaeranthera annua (Rydberg) Shinners
- 許可
- cc-by-nc-sa-3.0
- 版權
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Rayjacksonia annua: Brief Summary
(
越南語
)
由wikipedia VI提供
Rayjacksonia annua là một loài thực vật có hoa trong họ Cúc. Loài này được (Rydb.) R.L.Hartm. & M.A.Lane miêu tả khoa học đầu tiên năm 1996.
