Zornia venosa Mohlenbr., Webbia

Zeferino, Laís Couto, Lewis, Gwilym Peter, Pezzini, Flávia Fonseca & Fortuna-Perez, Ana Paula, 2025, A taxonomic synopsis of the genus Zornia J. F. Gmel. (Leguminosae: Papilionoideae) for the Neotropics, Acta Botanica Brasilica (e 20240197) 39, pp. 1-37 : 32-34

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).

Figures

Figure 4. Neotropical Zornia fruit morphology showing variation in the loment. It shows the article indumentum and presence or absence of bristle-like trichomes. A. Z. subsessilis B. Z. sericea C. Z. myriadena D. Z. ulei E. Z. bracteata. (Photos A: T.C. Monteiro; B: T.M. de Lima C, D: R.T. Queiroz; E: N. Frade).