Contains 5 accepted taxa overall.

Characteristics
Calopogon R.Br.
GRASSPINK
Classification
ASPARAGALES
Calopogon
Citation
CALOPOGON R. Brown, in W. T. Aiton, Hortus Kew. 5: 204. 1813, nom. cons.
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TYPE: Calopogon pulchellus R. Brown, nom. illegit. (Limodorum tuberosus Linnaeus; Calopogon tuberosus (Linnaeus) Britton et al.)
Distribution Map Present

This species have been reported in the counties highlighted.

Species
Scientific Name Common Name Herbarium Specimens Status Photos
Calopogon barbatus BEARDED GRASSPINK Native FACW (NWPL) FACW (DEP)
Calopogon multiflorus MANYFLOWERED GRASSPINK Native Threatened-State FACW (NWPL) FACW (DEP)
Calopogon pallidus PALE GRASSPINK Native OBL (NWPL) FACW (DEP)
Calopogon tuberosus var. simpsonii SIMPSON'S GRASSPINK Native OBL (NWPL) FACW (DEP)
Calopogon tuberosus var. tuberosus TUBEROUS GRASSPINK Native OBL (NWPL) FACW (DEP)
Identification Key
1.  (Flower consisting of 2 lateral ascending sepals and 1 downward-pointing sepal, 2 lateral descending petals and 1 erect lip with numerous bristles mimicking anthers, the column downward-pointing over the sepal) Corm usually forked; inflorescence rachis and ovary purple; flowers never white, strongly fragrant, opening nearly simultaneously; 2 lateral petals obovate, widest above the middle; flowering late Feb-early Jul (esp. Mar-May)
1.  Corm usually not forked; inflorescence rachis and ovary green to purple; flowers sometimes white, scentless to mildly fragrant, opening sequentially or nearly simultaneously; 2 lateral petals widest near or below the middle; flowering in various months
2
2.  Upper leaf tightly appressed to somewhat ascending; flowers never white, crowded on the rachis, <1 cm apart, opening nearly simultaneously, not fragrant; flowering Dec-early May (esp. Mar-Apr)
2.  Upper leaf ascending to divergent; flowers sometimes white, well-spaced along the rachis, >1 cm apart, opening sequentially, mildly fragrant; flowering in various months
3
3.  Floral bracts 1.5-4.5 mm long; lateral sepals 10-15 mm long, often strongly falcate and curved upwards; lateral petals 9-18 mm long, lanceolate to weakly pandurate, falcate; lip 9-13 mm long, 5-11 mm wide, middle lobe often broadly flared and wing-like (sometimes knobby); flowering late Mar-late Jul (esp. Apr-May)
3.  Floral bracts 3-30 mm long; lateral sepals 13-26 mm long, spreading to slightly falcate and curved upwards; lateral petals 13-28 mm long, obpandurate, slightly falcate to straight; lip 11-23 mm long, 5.5-21 mm wide, middle lobe often abruptly flared and knobby at the apex with a narrow claw; flowering in various months
4
4.  Leaf blade strongly curled transversely; dilated distal portion of middle lip lobe narrowly to widely expanded, whitened; wet, alkaline savannas; flowering Jan-May (esp. Mar-Apr)
4.  Leaf blade slightly curled transversely; dilated distal portion of middle lip lobe broadly expanded and not whitened except in entirely white flowers; acidic wetlands; flowering Mar-early Jun (esp. Apr-May)
1.  (Hybrid taxa) (multiflorus x pallidus)
1.  (barbatus x multiflorus)
1.  (barbatus x pallidus)
1.  (barbatus x tuberosus)
1.  (pallidus x tuberosus)
1.  (multiflorus x tuberosus)
Genus Synonyms
Synonym Full Citation Basionym Type
Helleborine Helleborine Kuntze, Revis. Gen. Pl. 2: 665. 1891, non Miller 1754. TYPE: = Calopogon R. Brown 1813.
Limodorum Limodorum Linnaeus, Sp. Pl. 950. 1753, nom. rej. vs. Limodorum Boehmer 1760. TYPE: Limodorum tuberosum Linnaeus = Calopogon R. Brown 1813.