| Arisaema stewardsonii | |
|---|---|
 | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Araceae |
| Genus: | Arisaema |
| Species: | A. stewardsonii |
| Binomial name | |
| Arisaema stewardsonii Britton[1] | |
| Synonyms[2] | |
A. stewardsonii
| |
Arisaema stewardsonii is aspecies offlowering plant in the arumfamilyAraceae.[2] It is a member of theArisaema triphyllum complex, a group of closely relatedtaxa in eastern North America. The specific namestewardsonii honors American botanistStewardson Brown (1867–1921). It is commonly known as thebog Jack-in-the-pulpit (orbog Jack). It is sometimes referred to as theswamp Jack-in-the-pulpit, not to be confused withArisaema pusillum, which is also known by that name.
Arisaema stewardsonii is aherbaceous,perennial, flowering plant growing from acorm. Like other members of theArisaema triphyllum complex, it has three leaflets per leaf. Itsspathe tube is strongly fluted (ridged), the only member of the complex with this distinctive character.[3]
Arisaema stewardsonii was first described and named byNathaniel Lord Britton in 1901.[1] Earlier that year, itstype specimen was collected inTannersville, Pennsylvania byStewardson Brown,Eugene Pintard Bicknell, and Britton.[4] The author referred to the type asStewardson Brown's Indian turnip.[5]
Arisaema stewardsonii is a member of theArisaema triphyllum complex, a group of closely related taxa that also includesArisaema acuminatum,Arisaema pusillum,Arisaema quinatum, andArisaema triphyllum. As of March 2023[update], some authorities considerArisaema stewardsonii to be asynonym forArisaema triphyllum orA. triphyllum subsp. stewardsonii.[6][7][8] However, most authorities acceptArisaema stewardsonii and the other species-level members of the complex.[3][9][10][11]
Arisaema stewardsonii was originally found in eastern Pennsylvania growing in wet woods amongSphagnum mosses,[5] hence the namebog Jack-in-the-pulpit. It occurs primarily in thenortheastern United States and theMaritime provinces ofeastern Canada,[2][7][12] ranging southward to the mountains in eastern Tennessee and western North Carolina,[13] and westward to Ohio. Being the most northern taxon of theArisaema triphyllum complex, it is sometimes called thenorthern Jack-in-the-pulpit.[14]
The global conservation status ofArisaema stewardsonii is unknown. Based on the conservation status ofArisaema triphyllum subsp. stewardsonii,[12] it may be inferred thatArisaema stewardsonii is globally secure (G5). It is uncommon (or worse) in North Carolina (S3), Ohio (S3), District of Columbia (S1S3), and New Jersey (S2).
Media related toArisaema stewardsonii at Wikimedia Commons
Data related toArisaema stewardsonii at Wikispecies