Characteristics
Dicots
Ageratum houstonianum Mill.
BLUEMINK
**
The peduncles and phyllaries are usually stipitate-glandular, although occasionally are glabrous (Johnson 1971). The leaf blades do not have the conspicuous yellow punctate glands like A. conyzoides.
Not Native
FACU (NWPL)
**
Classification
Citation
AGERATUM HOUSTONIANUM Miller, Gard. Dict., ed. 8. 1768.
**
MEXICO: Veracruz: Without data, Houston s.n. (lectotype: BM). Lectotypified by M. F. Johnson, Ann. Missouri Bot. Gard. 58: 21. 1971.
Species Distribution Map
Based on vouchered plant specimens from wild populations. Cultivated occurrences are not mapped. Click on a county to display its name.
Source
County
Herbaria
Literature Citation (If Applicable)
No sources found
Synonyms
Synonym
Full Citation
Basionym
Type
Ageratum conyzoides var. mexicanum
Ageratum conyzoides Linnaeus, var. mexicanum (Sims) de Candolle, Prodr. 5: 108. 1836.
BASIONYM: Ageratum mexicanum Sims 1825.
Ageratum houstonianum forma luteum
Ageratum houstonianum Miller, forma luteum B. L. Robinson, Contr. Gray Herb. 68: 6. 1923.
Ageratum houstonianum forma niveum
Ageratum houstonianum Miller, forma niveum B. L. Robinson, Contr. Gray Herb. 68: 6. 1923.
Ageratum houstonianum forma normale
Ageratum houstonianum Miller, forma normale B. L. Robinson, Contr. Gray Herb. 68: 5. 1923, nom. inadmiss.
BASIONYM: Ageratum houstonianum Miller 1768.
Ageratum houstonianum var. angustatum
Ageratum houstonianum Miller, var. angustatum B. L. Robinson, Contr. Gray Herb. 68: 6. 1923.
TYPE: FRANCE: Provence: Maritima Alps at Menton, 1878, Walther s.n. (holotype: Z; isotype: GH fragm).
Ageratum houstonianum var. typicum
Ageratum houstonianum Miller, var. typicum B. L. Robinson, Contr. Gray Herb. 68: 5. 1923, nom. inadmiss.
BASIONYM: Ageratum houstonianum Miller 1768.
Ageratum mexicanum
Ageratum mexicanum Sims, Bot. Mag. 52: t. 2524. 1825.
TYPE: MEXICO: Cult. in England, without data (lectotype: Sims, Bot. Mag. 52: t. 2524. 1825). Lectotypified by M. F. Johnson, Ann. Missouri Bot. Gard. 58: 22. 1971.
Ageratum mexicanum
Ageratum mexicanum Sweet, Brit. Fl. Gard. 1: t. 89. 1825, non Sims 1825.
TYPE: MEXICO: Cult. in England, without data (lectotype: Sweet, Brit. Fl. Gard. 1: t. 89. 1825). Lectotypified by M. F. Johnson, Ann. Missouri Bot. Gard. 58: 22. 1971.
Ageratum mexicanum forma albiflorum
Ageratum mexicanum Sims, forma albiflorum Voss, Vilm. Blumengärtn., ed. 3. 1: 445. 1894.
Ageratum mexicanum forma album
Ageratum mexicanum Sims, forma album (M. Vilmorin) Voss, Vilm. Blumengärtn., ed. 3. 1: 445. 1894.
BASIONYM: Ageratum wendlandii M. Vilmorin, var. album M. Vilmorin 1884.
Specimens and Distribution
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Counties listed:
Range of years during which specimens were collected:
Accession No.
Country
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Collection Date
Collector & Collection No
Notes
Image
No specimens found
Plant Photos
