Herbarium specimen; Herbarium specimens
Introduction
Opuntia lindheimeri is a Texas species; this variant is a clone with indeterminate grow at the apices of the cladodes. Other than the long cladodes, it is like O. lindheimeri in every other way.
The linguiformis clone (O. linguiformis Griffiths) was found near San Antonio, TX. Sometimes this clone is treated taxonomically as a form of O. engelmannii because O. lindheimeri is treated as a variety of O. engelmannii by some taxonomists.
Links
O. linguiformis at Tropicos
O. engelmannii linguiformis at the Plant List
O. linguiformis at IPNI
