Species
alopecuroideum
(Lam.) DC.
syn. Pterocaulon virgatum
2
Species
pycnostachyum
(Michx.) Ell.
syn. Pterocaulon virgatum
3
Species
undulatum
(Walt.) C. Mohr
syn. Pterocaulon virgatum
4
Species
virgatum
(L.) DC.
common name:
wand blackroot
Individual specimen entries are published in the sample database supplied with
The Compleat Botanica for species or varieties of this supra-generic taxon.
Semantax impliedFiddle concept contextOccurs oftenImplicit semantax The key concept presented is that semantax can often be implied from context. When that occurs the sematax can be omitted.