New Mexico Wildflowers: Plantain Family

(Plantaginaceae)

Following recent DNA studies, the penstemons have been moved from the Figwort family to this family. Flowers are organized alphabetically by genus and species. Hover over a photo series to control the images.

Dalmatian Toadflax (Linaria dalmatica)

If you look at these flowers and think "butter-and-eggs," that's very understandable, but butter-and-eggs are a different species of Linaria. One way to tell them apart is to notice how the stems of Dalmatian toadflax are thick with broad, sturdy pointed leaves.

Sand or Bush Penstemon (Penstemon ambiguus)

This penstemon thrives by the sides of highways, where disturbed soil receives supplemental moisture that has run off the adjacent blacktop. The flower color ranges from lavender to white, including on the same plant.

Broad-beard or Narrowleaf Penstemon (Penstemon angustifolius)

Broad-beard, narrowleaf, penstemon, angustifolius, Mesa Portales, New Mexico — Mesa Portales, June 2015

Scarlet Bugler, Beard-lip Penstemon (Penstemon barbatus)

These penstemons vie with Indian paintbrush as the signature red flower of the Southwest's uplands. Look for flowers hanging from a wand-like stem, and narrow leaves below.

From a distance it's easy to confuse red penstemons with skyrockets (in the phlox family). If you look "down their throats," as shown in the thumbnail picture, the difference is obvious. Penstemons look like an open animal's mouth to me, but skyrockets look like a five-pointed star.

Inflated Penstemon (Penstemon inflatus)

On this penstemon, note the white throat and the "tongue" that is bearded for half its length and does not stick out of the flower.

James'/Arizona Penstemon (or Beardtongue) (Penstemon jamesii, P. ophianthus)

Arizona penstemons (Penstemon ophianthus) and James' penstemons (Penstemon jamesii) are so similar that at times, the former have been classified as a subspecies of the latter. If you must know which species you're looking at, the fully developed flower on James' is 24 to 35 mm long (roughly 1 to 1 1/3 inches), while the flower on the Arizona is smaller, 14 to 22 mm long (under 1 inch). My photos are from chance encounters, without measurements, hence my decision to lump the two species. For both the Arizona and the James', identifying characteristics include the "inflated" look to the flower tube, the streaks of darker color, and the yellow beardtongue (sterile stamen) that sticks out beyond the flower tube.

Sidebells Beardtongue? (Penstemon secundiflorus)

During the drought in the first half of 2022, I came across a patch of small, struggling penstemons that had put out a few tiny flowers. Difficult to be certain of the ID when the plant is in such poor shape.

Rocky Mountain Penstemon (Penstemon strictus)

My ID of these Rocky Mountain penstemons is based on the narrow leaves in "opposite" pairs (meaning that they spring out of the stem at the same height), the non-hairy leaves and flowers, and the deeply notched lower lobes on the flowers.

Wandbloom Penstemon (Penstemon virgatus)

Many images of wandbloom penstemons, including my own from the Pino Trail, show the flowers as purple. Apparently there's also a variant where the flowers are white with purple streaks. Littlefield and Burns' book shows the lighter variant.

Dusky Penstemon (Penstemon whippleanus)