James Mark Porter

Dayia is a genus of flowering plants belonging to the family Polemoniaceae. Its native range is Southwestern Texas to Northern Mexico, and Northern Chile. The genus name of 'Dayia' is in honour of Alva Day Grant (1920–2014), American botanist and professor at the University of Texas at Austin. Species known: Dayia glutinosa (Phil.) J.M.Porter Dayia grantii J.M.Porter Dayia havardii (A.Gray) J.M.Porter Dayia scabra (Brandegee) J.M.Porter Dayia sonorae (Rose) J.M.Porter

Bryantiella palmeri is a species of flowering plant belonging to the family Polemoniaceae. It is the sole species in genus Bryantiella. It is an annual native to Baja California, where it grows in deserts and dry shrublands.

Aliciella leptomeria (formerly Gilia leptomeria) is a species of flowering plant in the phlox family known by the common names sand gilia and Great Basin gilia. It is native to the Western United States, where it grows in many types of habitat, such as the sagebrush of the Great Basin and in the Mojave Desert. It is a small herb producing a thin, branching stem up to about 23 centimeters tall. It is coated in glandular hairs. Several deeply lobed leaves 1 to 6 centimeters long are located in a basal rosette at ground level around the stem. There are smaller, unlobed leaves along the stem. The

Aliciella caespitosa (syn. Gilia caespitosa) is a species of flowering plant in the phlox family known by the common names Rabbit Valley gilia and Wonderland Alice-flower. It is endemic to Utah, where it is known only from Wayne County. This perennial herb has a thick basal clump of sticky leaves growing just a few centimeters tall. The flowers are scarlet to blue-purple in color, sometimes fading maroon or purple. Flowering occurs in June and July, and seeds are produced in July and August. This species was collected in 1875 and not reported again for 90 years. There are about 6 populations

Sclerocactus sileri, the Siler fishhook cactus, is a rare and very small cactus found mostly in mineral-rich desert areas of intermediate elevations, notably in the American states of Utah, Nevada, and northern Arizona.

Sclerocactus brevispinus is a rare species of cactus known by the common name Pariette cactus. It is endemic to Utah in the United States, where it is known only from the Pariette Draw, a draw in Duchesne County. It is threatened by a number of processes and human activities.

Linanthus pungens (syn. Leptodactylon pungens) is a species of flowering plant in the phlox family known by the common names granite prickly-phlox and granite gilia. It is native to western North America from British Columbia to Baja California and east to Montana and New Mexico. This plant has been called a shrub or a perennial herb with an especially woody base. It produces several stems which may grow erect or may be short and spreading, forming a mat. Mat-forming plants are more common at higher elevations. When erect it can reach 80 centimetres (2+7⁄12 ft) in height but is usually

Leptosiphon rattanii (syn. Linanthus rattanii) is a rare species of flowering plant in the phlox family known by the common name Rattan's linanthus. It is endemic to California, where it is known only from inner sections of the North Coast Ranges. It is a small, thin annual herb producing a hairy, glandular stem up to 20 centimeters tall. The leaves are divided into tiny threadlike lobes. The inflorescence is generally made up of a single flower with a very thin, hairy, reddish tube over a centimeter long tipped with a flat white corolla with lobes a few millimeters in length.

Leptosiphon pygmaeus (syn. Linanthus pygmaeus) is a species of flowering plant in the phlox family known by the common name pygmy linanthus.

Leptosiphon pachyphyllus (syn. Linanthus pachyphyllus) is a species of flowering plant in the phlox family, known by the common name Sierra linanthus.

Leptosiphon nuttallii is a species of flowering plant in the phlox family known by the common name Nuttall's linanthus. It is native to much of western North America, including the Western United States from California to New Mexico and Montana, and Northwestern Mexico. It is known from many types of habitat. It is native to the Klamath Mountains, Northern California Coast Ranges and Sierra Nevada in Northern California; and the Inyo Mountains, Peninsular Ranges, Transverse Ranges, and White Mountains in Southern California.

Leptosiphon montanus (synonym Linanthus montanus) is a species of flowering plant in the phlox family, known by the common name "mustang clover".

Leptosiphon liniflorus is a species of flowering plant in the phlox family known by the common name narrowflower flaxflower. It is native to the western United States from Washington and Idaho, through Oregon and Nevada, and across California. It grows below 1,700 metres (5,600 ft), in many types of habitats, including chaparral, oak woodland, grasslands, yellow pine forest, and on serpentine soils.

Leptosiphon breviculus is a species of flowering plant in the phlox family known by the common name Mojave linanthus. It is endemic to California, where it is known from the Mojave Desert and dry spots in the adjacent Transverse Ranges. It is an annual herb producing a thin, hairy stem up to about 25 centimeters tall. The hairy, oppositely arranged leaves are each divided into very narrow needle-like lobes up to a centimeter long. The tip of the stem is occupied by an inflorescence of one or more white, pink, or blue flowers with purple throats, each about a centimeter wide. The length of the

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Aliciella tenuis (syn. Gilia tenuis) is a rare species of flowering plant in the phlox family known by the common name Mussentuchit gilia, or Mussentuchit Creek gilia. It is endemic to Utah in the United States, where it occurs only in the San Rafael Swell. This plant is a perennial herb growing up to 15 centimeters tall. The basal leaves are divided into lobes. The herbage is coated in glandular hairs that often have sand stuck to them. The flowers are pale blue and appear in May through July. This species grows in rocky, sandy habitat, such as sandstone outcrops and talus slopes. The rare

Aliciella micromeria (formerly Gilia micromeria) is a species of flowering plant in the phlox family known by the common name dainty gilia. It is native to the western United States, especially the Great Basin. It is a small herb producing a thin, branching stem up to about 14 centimeters tall. It is coated thinly in soft hairs. Several deeply lobed leaves 1 to 6 centimeters long are located in a basal rosette at ground level around the stem. There are smaller, unlobed leaves along the stem. The inflorescence produces white or lavender flowers each about 3 millimeters wide.

Aliciella latifolia (formerly Gilia latifolia), also known as broad-leaved gilia, is a foul smelling annual plant in the Phlox family (Polemoniaceae) found in deserts of the southwestern United States.

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Loeseliastrum depressum (formerly Ipomopsis depressa) is a species of flowering plant in the phlox family known by the common name depressed ipomopsis. It is native to the deserts of the southwestern United States, where it grows in sandy habitat. It is a petite, decumbent annual herb forming a small clump on the ground, its hairy, glandular stems no more than 10 centimeters long. The leaves are linear to oval and pointed, each not more than 2 centimeters long. They are coated in white hairs. The inflorescence is a dense cluster of tiny white flowers, each pointed corolla lobe just a

Linanthus inyoensis (formerly Gilia inyoensis) is a species of flowering plant in the phlox family known by the common name Inyo gilia. It is native to eastern California and western Nevada, where it is a common member of the flora in several types of habitat at the western edge of the Great Basin where it meets the Sierra Nevada into the High Sierra Nevada, Inyo Mountains, and White Mountains. Description Linanthus inyoensis is a petite herb, growing up to 10 centimeters tall. Its hair-thin stem glandular on the upper parts and coated in white hairs below. The leaves are just a few

Leptosiphon septentrionalis is a species of flowering plant in the phlox family known by the common name northern linanthus.

Leptosiphon oblanceolatus (syn. Linanthus oblanceolatus) is a species of flowering plant in the phlox family known by the common name Sierra Nevada linanthus.

Leptosiphon nudatus (syn. Linanthus nudatus) is a species of flowering plant in the phlox family known by the common name Tehachapi linanthus.

Leptosiphon lemmonii (syn. Linanthus lemmonii) is a species of flowering plant in the phlox family known by the common name Lemmon's linanthus. Leptosiphon lemmonii is native to the San Bernardino Mountains and the Peninsular Ranges in southern California (U.S.) and northern Baja California (México). It grows below 1,900 metres (6,200 ft), in dry inland chaparral, oak woodlands, the Colorado Desert chaparral ecotone, and Yellow pine forest habitats.

Leptosiphon harknessii (syn. Linanthus harknessii) is a species of flowering plant in the phlox family known by the common name Harkness' flaxflower.

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Leptosiphon filipes (syn. Linanthus filipes) is a species of flowering plant in the phlox family known by the common name thread linanthus.

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Leptosiphon bolanderi (syn. Linanthus bolanderi) is a species of flowering plant in the phlox family known by the common name Bolander's linanthus.