candle anemone

(Anemone cylindrica)

               
Conservation Status

IUCN Red List

not yet assessed

candle anemone

NatureServe

N5? - Secure

SNR - Unranked

Minnesota

not listed

Nativity

Native

Occurrence

Common

Habitat

Dry to moderate moisture. Open woods, prairies. Full to partial sun.

Flowering

June to August

Flower Color

White

Height

12 to 40

Photo by Bill Reynolds

Identification

This is an erect perennial forb rising from a short, ascending to vertical caudex. It is usually 12 to 27 tall but can reach up to 40 in height in favorable conditions.

A whorl of usually 5 to 10 basal leaves rises from the ground at the top of the caudex. Basal leaves are on 3½ to 8¼ long leaf stalks (petioles). The leaf blades are broadly inversely egg-shaped in outline and are divided into three leaflets. The terminal leaflet is unstalked, broadly diamond-shaped or inversely lance-shaped in outline, 1¼ to 2 long, and 1½ to 4 wide. It is narrowly wedge-shaped at the base and cut at the tip into 3 lobes. The lobes may be shallow or deep, and often have secondary lobes. The ultimate lobes are sharply pointed. The surfaces are covered with straight, stiff, appressed hairs, more so on the lower surface. The margins are toothed with sharp or rounded teeth. The lateral leaflets are similar but sometimes deeply divided into 2 segments, causing the leaf blade to appear at first inspection to be divided into 4 or 5 segments.

A single flowering stem rises from the caudex at the base of the whorl of leaves. At the top of the stem there is a whorl of 3 leaf-like involucral bracts (sometimes called involucral leaves) and 2 to 8 (usually 3 or fewer) flowering stalks (peduncles). The involucral bracts are conspicuously stalked and similar to the basal leaves.

The stem leaves are conspicuously stalked; moderately to densely covered with fine, short hairs, more so on the lower surface; and are smaller but otherwise similar to the basal leaves. They are in two or three ranks, though they sometimes appear one-ranked, and three of the leaves are much larger than the rest.

The inflorescence is a single flower at the end of each peduncle. Each peduncle is 4 to 12 long, unbranched, and moderately to densely covered with long, soft, shaggy, unmatted hairs. There peduncles are bare, with no secondary involucral bracts.

The flower is about ¾ in diameter. There are no petals, 4 to 6 (usually 5) petal-like sepals, and 50 to 75 stamens with yellow anthers. The sepals are oblong to elliptic or egg-shaped, greenish-white, 5 16 to ½ long, and to 3 16 wide. The flowers have no scent.

The infructescence is a dense, thimble-like fruiting head. It is densely woolly, narrowly cylinder-shaped. It is up to 1½ long, wide or less, and at least twice as long as it is wide.

The fruit is an achene with a tuft of hair attached to the end. In the fall when the achenes mature the fruiting head appears cottony.

 
Similar
Species

Tall thimbleweed (Anemone virginiana) has a shorter, wider, more prickly fruiting head. It has only 3 leaves in a whorl at the base of the flowering stalk. There is a pair of leaf-like bracts on usually all but one of the flower stalks.


Distribution Distribution Map   Sources: 2, 3, 4, 5, 7, 24, 28.

Comments

 


Taxonomy

Family:

Ranunculaceae (buttercup)

 

Subfamily:

Ranunculoideae

 

Tribe:

Anemoneae

 
Synonyms

 

 
Common
Names

candle anemone

cottonweed

long-fruited anemone

long-head anemone

long-headed anemone

 

long-headed thimbleweed

candle anemone

prairie thimbleweed

thimble Weed

thimbleweed


 

 

 

 

 

 

 

Glossary

achene

A dry, one-chambered, single-seeded fruit, formed from a single carpel, with the seed attached to the membranous outer layer (wall) only by the seed stalk; the wall, formed entirely from the wall of the superior ovary, does not split open at maturity, but relies on decay or predation to release the contents.

 

bract

Modified leaf at the base of a flower stalk or flower cluster.

 

caudex

A short, thickened, woody, persistent enlargement of the stem, at or below ground level, used for water storage.

 

peduncle

In angiosperms, the stalk of a single flower or a flower cluster; in club mosses, the stalk of a strobilus or a group of strobili.

 

petiole

The stalk of a leaf blade or compound leaf that attaches the leaf blade to the stem.

 

sepal

An outer floral leaf, usually green but sometimes colored, at the base of a flower.

       

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Bill Reynolds


Flowers

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Leaves

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MinnesotaSeasons.com Photos

   

Plant

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Inflorescence

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Leaves

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Infructescence

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  candle anemone    
       
       

 

Camera

     

Slideshows

   
  Anemone cylindrica THIMBLEWEED
Frank Mayfield
 
  Anemone cylindrica THIMBLEWEED  

 

slideshow

     

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Bill Reynolds
6/24/2017

Location: Pennington Co MN

candle anemone


     
     
 

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