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Helianthus maximiliani Schrad.
Helianthus maximilianii

Life   Plantae   Dicotyledoneae   Asteraceae   Helianthus

Helianthus maximiliani, plant and flower
© Kay Yatskievych, 2003 · 1
Helianthus maximiliani, plant and flower

Click on map for details about points.


Associates · map
FamilyScientific name @ source (records)
Andrenidae  Andrena chromotricha @ AMNH_BEE (3)

Andrena helianthi @ CUIC_ENT (2); AMNH_BEE (14)

Andrena hirticincta @ AMNH_BEE (1)

Perdita swenki @ AMNH_BEE (4)

Pseudopanurgus piercei @ AMNH_BEE (11)

Pseudopanurgus simulans @ AMNH_BEE (17)
Aphididae  Uroleucon ( @ NCSU (1)
Apidae  Apis mellifera @ UCMS_ENT (3)

Bombus ashtoni @ AMNH_BEE (1)

Bombus griseocollis @ AMNH_BEE (1)

Bombus ternarius @ AMNH_BEE (1)

Bombus terricola @ AMNH_BEE (3)

Ceratina mikmaqi @ AMNH_BEE (1)

Melissodes agilis @ AMNH_BEE (1)

Melissodes bidentis @ AMNH_BEE (2)

Nomada vincta @ BBSL (1)

Triepeolus helianthi @ AMNH_BEE (1)
Colletidae  Colletes simulans @ AMNH_BEE (1)
Halictidae  Agapostemon virescens @ AMNH_BEE (3)

Augochlorella aurata @ AMNH_BEE (1)

Halictus ligatus @ BBSL (6)

Halictus rubicundus @ AMNH_BEE (2)

Lasioglossum paraforbesii @ AMNH_BEE (1)
Megachilidae  Coelioxys rufitarsis @ AMNH_BEE (1)

Megachile brevis @ AMNH_BEE (1)

Megachile centuncularis @ AMNH_BEE (1)

Megachile fidelis @ BBSL (4)

Megachile latimanus @ AMNH_BEE (6)

Megachile parallela @ AMNH_BEE (5)

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Following modified from MissouriPlants.com
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Helianthus maximiliani Schrad.

Helianthus maximiliani plant

Family - Asteraceae

Stems - No info. yet.

Helianthus maximiliani stem

Leaves - No info. yet.

Helianthus maximiliani leaf

Helianthus maximiliani leaf Abaxial surface of the leaf.

Inflorescence - No info. yet.

Involucre -No info. yet.

Helianthus maximiliani involucre Involucre.

Ray flowers - No info. yet.

Disk flowers - No info. yet.

Helianthus maximiliani flowers

Flowering - July - October.

Habitat - Limestone glades, bluffs, bald knobs, rocky prairies, loess hills, roadsides, waste ground.

Origin - Native to U.S.

Other info. - This showy species can be found scattered nearly throughout Missouri but is actually only native to the western Ozark region and in the loess hills of the extreme northwest corner of the state. It has been introduced elsewhere. This is perhaps the easiest species of Helianthus to identify in Missouri. The alternate leaves, which are folded and falcate, and grayish cast of the entire plant are good characters to look for. This big plant does very well in cultivation but can get weedy if left undisturbed. Cultivated varieties are even more showy than the wild plants.

Photographs taken off Hwy 60, Carter County, MO., 8-31-03.


Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=HEMA2 ---> https://plants.usda.gov/java/profile?symbol=HEMA2
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://plants.usda.gov/java/profile?symbol=HEMA2

Following modified from Flora of North America
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Link to Flora of North America home
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FNA Vol. 21 Page 141, 147, 162 , 165, 166 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 21 | Asteraceae | Helianthus

44. Helianthus maximiliani Schrader, Index Seminum (Göttingen). 1834: unpaged. 1835.

Maximilian sunflower , hélianthe de Maximilien

Helianthus dalyi Britton

Perennials , 50—300 cm (rhi-zomatous). Stems erect, 5—30 dm, scabrous to scabro-hispidulous. Leaves cauline; mostly alternate; petioles 0—2 cm; blades (light green to gray-green, 1-nerved, conduplicate) lanceolate, 10—30 × 2—5.5 cm, bases cuneate, margins usually entire, sometimes serrulate, abaxial faces scabrous to scabro-hispid, gland-dotted. Heads (1—)3—15 (often in racemiform to spiciform arrays ). Peduncles 1—11 cm. Involucres hemispheric, 13—28 mm diam. Phyllaries 30—40, lanceolate, 14—20 × 2—3 mm, (margins ciliate) apices acute to attenuate, abaxial faces canescent, gland-dotted. Paleae 7—11 mm, entire or 3-toothed (apices greenish, mucronate, hairy). Ray florets 10—25; laminae (15—)25—40 mm. Disc florets 75+; corollas 5—7 mm, lobes yellow; anthers dark brown or black; appendages usually yellow , sometimes partly dark . Cypselae 3—4 mm, glabrate; pappi of 2 aristate scales 3—4.1 mm. 2 n = 34.

Flowering late summer—fall. Prairies , fields, waste areas; 0—300(—2100+) m; Alta., B.C., Man., Ont., Que., Sask.; Ala., Ark., Calif., Colo., Conn., Del., D.C., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Pa., S.C., S.Dak., Tenn., Tex., Utah, Va., Wash., W.Va., Wis., Wyo.; Mexico.

Helianthus maximiliani is introduced in eastern Ontario and in Quebec. It appears to be native to midcontinental prairie regions and has spread along railroads and highways into all areas of North America. Its wide dispersal may be aided by cultivation for its attractive, showy floral displays. In addition to the usually conduplicate, single-nerved leaves and spikelike arrangement of the heads, it is distinguished by the whitish-canescent indument of the leaves and stems and the long-attenuate phyllaries.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Helianthus+maximiliani+&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Helianthus+maximiliani+&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Helianthus+maximiliani+&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

Updated: 2018-01-21 05:42:25 gmt
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