All Floras      Advanced Search
FNA Vol. 4 Page 192, 196 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 4 | Cactaceae | Echinomastus

5a. Echinomastus intertextus (Engelmann) Britton & Rose var. intertextus

Stems spheric when young, ovoid to ovoid-cyli ndric with age, appear-ing smooth and easily handled. Spines closely appressed, except for the porrect abaxial central spine, which is 0.5-4(-5) mm. 2n = 22.

Flowering Feb-Apr; fruiting Apr-Jun. Desert grasslands and plains grasslands, grassy hills, bajadas, sometimes with junipers or oaks, on igneous substrates (rarely limestone); 1000-1900 m; Ariz., N.Mex., Tex.; Mexico (Chihuahua).

Most published records of Echinomastus intertextus from central New Mexico, and many from southern New Mexico, probably pertain to var. dasyacanthus; the varieties replace each other geographically, but many populations in south-central New Mexico may be intermediate, containing long-, medium-, and short-spined individuals. Although not documented for Sonora, var. intertextus is known less than one kilometer from the Mexican border in southeastern Arizona.


Related Objects Image Gallery 
  • Illustration
  • Illustration
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |