BugwoodWiki Article

Texas blueweed
Helianthus ciliaris DC.

Overview

Appearance
Helianthus ciliaris is a perennial herbaceous plant that can grow from 1.3-2.3 ft. (40-70 cm) tall. The stems are blue-green to gray-green in color and can be upright to recumbent. H. ciliaris is native to Arizona, Kansas, New Mexico, Oklahoma, Texas, Utah and Mexico.
Foliage
The mostly opposite leaves are cauline, sessile and veined. They are linear to lanceolate and from 1.2-3.0 x 0.2-0.9 in. (3-7.5 x 0.5-2.2 cm) long by wide.
Flowers
The flowers are composites. The ray flowers are yellow while the disk flowers are reddish to purple-brown in color.
Fruit
The fruits are glabrous cypselae containing a single seed. Seeds are smooth and hairless, 0.12-0.14 in. (3-3.5 mm) long. H. ciliaris also readily reproduces vegetatively by rhizomes.
Ecological Threat
H. ciliaris grows along roadsides, ditches, cultivated fields and open drainage areas. It can spread aggressively, especially in cultivated fields. The creeping rhizomes of H. ciliaris allow it to form extensive colonies.

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Asterales
Family: Asteraceae
Genus: Helianthus

Other System Links

Plants: HECI
Bayer: HELCI
GRIN: 104286
ITIS: 36625
NPDN Pest: PBFBUBC
NPDN Host: 36395

Synonyms and Other Names

Other Common Names:
blueweed, blueweed sunflower, Texas-blueweed, yerba parda

Categories

Category: Forbs/Herbs