Jaltomata tlaxcala Flores-Sánchez & Sandoval-Villa, 2024

Flores-Sánchez, Ignacio Darío, Sandoval-Villa, Manuel, Uscanga-Mortera, Ebandro & Silva-Rojas, Hilda Victoria, 2024, Jaltomata tlaxcala, a new species of the genus Jaltomata (Solanaceae, Solanoideae, Solaneae), Phytotaxa 641 (2), pp. 85-98 : 91

Jaltomata tlaxcala Flores-Sánchez & Sandoval-Villa sp. nov. ( Figures 3–6 ).

The sequence of the specimen was deposited in GenBank under accession number PP272016.

Holotype: Mexico, Tlaxcala, municipality of Ixtenco , growing on the side of maize crop field, 19°15´N and 97°53´W, predominant temperate sub-humid climate C (w1) and C (w2), elevation 2500 m.a.s.l., August 11 th, 2015.

Diagnosis: Jaltomata tlaxcala differs from J. procumbens and J. bohsiana ( Table 3 ) in growth habit, prostrate or decumbent ( J. tlaxcala ) vs. erect ( J. procumbens and J. bohsiana ), leaf type, subalternates ( J. tlaxcala ) vs. alternate ( J. procumbens and J. bohsiana ), number of flowers per inflorescence, 2 to 3 flowers ( J. tlaxcala ) vs. up to 18 flowers ( J. procumbens ) and 5 to 7 flowers ( J. bohsiana ), pedicel type, subterete or almost terete ( J. tlaxcala ) vs. pedicel with longitudinal elevated ridges ( J. procumbens ) and angled pedicel ( J. bohsiana ), calyx characteristics and position in the fruit, calyx marcescent green and covering about half of the fruit with the tips of the lobes raised ( J. tlaxcala ) vs. calyx green or green with purple colour, plane to reflexed and showing the fruit on lateral view or bowl-like on the fruit ( J. procumbens ), and calyx purple, recurved and concave in transverse section ( J. bohsiana ), corolla colour, pale yellow and dark green flower base, giving the overall appearance of a ring ( J. tlaxcala ) vs. pale green, light green ( J. procumbens ) and pale green ( J. bohsiana ), stigma shape, discoid ( J. tlaxcala ) vs. capitate ( J. procumbens and J. bohsiana ), fruit colour, pale green with few dark green or purple vertical lines, with a slight purple spot on one side of the fruit when ripe ( J. tlaxcala ) vs. black or dark purple when ripe ( J. procumbens ) and dark bright when ripe ( J. bohsiana ), seed shape and measurements, oblate form with length of 1.68 mm, width of 1.51 mm and thickness of 0.51 mm ( J. tlaxcala ) vs. ovate to reniform with length of 1.46 mm, width of 1.29 mm and thickness of 0.52 mm ( J. procumbens ) and ovate to sub-triangle with length of 1.30 mm, width of 0.98 mm and thickness of 0.38 mm ( J. bohsiana ).

Figures

FIGURE 3. Vegetative and reproductive morphology of J. tlaxcala. A: prostrate/decumbent habit; B–C: axillary buds; D–F: subalternate leaf arrangement, ovate to elliptic; G–H: umbel of two to three flowers; I–K: perfect actinomorphic flower.

FIGURE 4. Anthesis and floral morphology of J. tlaxcala. L–N: anthesis; O–P: pedicel subterete or almost terete and perianth rotated, gamosepalous, gamopetalous; Q–S: calyx pubescence, actinomorphic, gamosepalous; T: corolla actinomorphic, gamopetalous.

FIGURE 5. Androecium and gynoecium morphology of J. tlaxcala. U: corolla actinomorphic, gamopetalous; V–X: androecium antisepalous, hypogynous; Y–Z: gynoecium bilocular, ovary superior, stigma discoid.

FIGURE 6. Reproductive morphology of J. tlaxcala fruits and seeds. AA–BB: gynoecium bilocular, ovary superior, stigma discoid; CC–FF: fruit a berry; GG–HH: seed oblate, albuminous, dicotyledonous embryo.