References
Feist, M.A.E. 2010. The reinstatement of Ptilimnium texense (Apiaceae) and a new key to the genus. J. Bot. Res. Inst. Texas 4: 641-651. Google Scholar
Feist, M.A.E. 2010. The reinstatement of Ptilimnium texense (Apiaceae) and a new key to the genus. J. Bot. Res. Inst. Texas 4: 641-651. Google Scholar