Home
Posts
Article
Encyclopedia
Garden
Set
English
  

Rudbeckia laciniata

Dummer. ゛☀
2017-08-03
Family - Asteraceae
Stems - To 3m tall, from fibrous and fleshy roots, erect, branching, single or multiple from the base, slightly fragrant, glabrous, glaucous, herbaceous.

Stems - To 3m tall, from fibrous and fleshy roots, erect, branching, single or multiple from the base, slightly fragrant, glabrous, glaucous, herbaceous.
Leaves - Alternate, petiolate, reduced to bracts in inflorescence and often unlobed near the apex of the plant. Petioles to +10cm long, with a shallow adaxial groove. Blades deeply lobed (the lobes often divided again), to +/-25cm broad, +/-40cm long. Lobes serrate, deep green above, light green below, glabrous but the margins of the serrations often antrorse strigillose. The lateral venation splitting at the base of the sinuses.


Inflorescence - Loose cymose arrangement of terminal flowerheads, bracteate. Peduncles to 15cm long.
Involucre - Flat, to -3cm broad. Phyllaries unequal, some or all reflexed, linear oblong, in one or two series, to 1.5cm long, -6mm broad, acute, green, glabrous.
Ray flowers - +/-9 per flowerhead, sterile. Ligule yellow, antrorse appressed pubescent externally, glabrous internally, with a single notch at apex, oblong-elliptic, 1.3cm broad, +/-4cm long. Achenes 3mm long in flower, glabrous, angled.
Disk flowers - Disk to 2cm in diameter, conic to globose. Corolla yellow, glabrous, 5-lobed, -4mm long. Lobes erect, .6mm long, triangular. Stamens 5, adnate at the base of the corolla tube. Filaments yellow, compressed, glabrous, 2mm long. Anthers deep purple, connate around the style, -2mm long, mostly exserted. Style exserted, bifurcate, the apices spreading, glabrous, pale yellow. Achenes in flower pinkish, 4-angled, 4mm long, glabrous, becoming deep purple to black and 5mm long in fruit. Receptacle cylindric. Chaff slightly enclosing the achenes, pubescent at the apex, whitish to whitish-green, 5mm long.
Flowering - July - September.
Habitat - Rich low woods, streambanks, woodlands along lakes and sloughs, wet thickets.
Origin - Native to U.S.
Other info. - This species is common throughout Missouri. The plant gets quite large and produces many flowers. Some varieties of this species are cultivated frequently.
Traditionally the plant was used to treat indigestion, burns, and other ailments. The plant may be toxic if eaten in large quantities.
The species epithet "laciniata" means "torn" because of the divided nature of the leaves.
0
0
Article
comment
😀 😁 😂 😄 😆 😉 😊 😋 😎 😍 😘 🙂 😐 😏 😣 😯 😪 😫 😌 😜 😒 😔 😖 😤 😭 😱 😳 😵 😠
* Only support image type .JPG .JPEG .PNG .GIF
* Image can't small than 300*300px
Nobody comment yet, write down the first!
Just Reply
Latest Article
Elite Article
Related Articles
2017-07-31
0
0
2017-07-14
0
0
2017-08-03
0
0
2017-08-03
0
0
FeedBack

You have any problems or suggestions, please leave us a message.

Please enter content
Download GFinger APP

Scan QR code, download GFinger APP to read more.

QR Code

Scanning QR Code, directly to see the home page

Switch Language
Set
VIP
Sign out
Share

Share good articles, GFinger floral assistant witness your growth.

Please go to the computer terminal operation

Please go to the computer terminal operation

Forward
Insert topic
Remind friend
Post
/
Submit success Submit fail Picture's max size Success Oops! Something wrong~ Transmit successfully Report Forward Show More Article Help Time line Just Reply Invite you to chat together! Expression Add Picture comment Only support image type .JPG .JPEG .PNG .GIF Image can't small than 300*300px At least one picture Please enter content