Zornia venosa Mohlenbr., Webbia

Zornia venosa Mohlenbr., Webbia 16(1): 80, f. 15 & 58. 1961. Fig. S4 Type: MEXICO. Chihuahua: Municipio de Temosachic, 8 miles S of Temosachic, 21 September 1939, C.H. Müller 3397 (holotype F–0059983F!; isotype UC–720055!) Shrub to ca. 40 cm tall. Stems erect, branched, glabrous. Leaves with 2 leaflets, petiolate. Leaflets 7–24 × 3.5–13 mm, lanceolate, glabrous. Stipules elliptic, 3–5 veined. Inflorescences spiciform, axillary, 10 cm long. Bracteoles 7–12 × 5–9 mm, ovate, 5–9 veined, punctate, glabrous, green. Loment with 3–5 articles; articles 2–2.5 × 2–2.2 mm, reticulate-veined, bristle-like trichomes 1 mm long. Distribution and habitat: Mexico, endemic. It occurs in Tropical Dry Forest. Conservation Status: Data Deficient (DD). There is a lack of data on the distribution of Z. venosa, with only three known occurrences (EOO= 357,928.549 km ²; AOO= 16.000 km ²). Notes: Zornia venosa morphologically resembles Zornia piurensis, but differs by the size of its loment articles (2–2.5 × 2–2.2 mm vs. 2–2.3 × 1.6–2 mm in Z. piurensis), and its inflorescences spiciform 10 cm long (vs. inflorescences spiciform 15 cm long in Z. piurensis). Representative specimen examined: MEXICO. Durango: La Providencia, n.d., Nelson 4973 (US). Jalisco: 11 miles SE of Lagos de Moreno, n.d., Vaugh 12803 (US).