A gypsophilic, crustose disk lichen appearing as small (<1 to 2mm) raised, citrine-yellow disks on gypsum surfaces. Thallus (vegetative body of the lichen) is very sparsely developed and can be endolithic (growing within the rock crystals), ...
Annual, hemiparasitic, somewhat succulent, glabrous (except floral parts), to about 50 cm tall, with numerous divergent, ascending branches, green or purplish, drying blackish; leaves mostly opposite (especially below), linear, entire, stem leaves 2-...
Robust perennial herb to 1.5 m tall, forming large clumps; leaves mostly in 1-3 pairs in the basal 1/4 of the plant, petioles 5-10 cm long, blades broadly ovate to more or less circular, thick, leathery-succulent, glaucous pale bluish-green, smooth; ...
Perennial from a taproot, strigulose or pilose with basifixed hairs; stems clustered on a root crown, spreading, distally ascending, 0.5-3 dm long; leaves pinnately compound, 6-20 cm long; leaflets 19-40, becoming smaller up the rachis, mostly ellipt...
Robust biennial or monocarpic perennial; stem strict, 1-2.5 m tall; basal leaves ample, succulent, 30 cm or more long, sinuate or pinnatifid, weakly prickly with short black spines, nearly glabrous, the thin weblike wool tardily deciduous; stem leave...
Stems succulent, hemispheric, tubercled, up to 15 cm in diameter and tall, or exceptionally taller, usually single but sometimes a few in a cluster; tubercles to 7 mm long, conical, somewhat dorsiventrally flattened, with a felted groove running the ...
