Phylotogia (February 1996) 80(2);118-120 A NEW SPECIES OF GENTIANA (GENTIANACEAE) FROM NUEVO LEON, MEXICO B.L. Turner DepartmentofBotany, UniversityofTexas, Austin,Texas 78713 U.S.A. ABSTRACT A new species of Gentiana, G. hintoniorum B.L. Turner, from Nuevo Le6n, Mexico, is descnbed and illustrated. It belongs to the sect. Pneumonanthe and relates to Gentiana laevigata, the latter known only from theMexicanstatesofChiapasandOaxaca. KEY WORDS: Gentianaceae, Gentiana, Mexico,NuevoLe6n,systematics GENTIANA HINTONIORUM B.L. Turner, spec. nov. Figure 1. TYPE: MEXICO. NuevoLe6n: Mpio. Arambem,CerroViejo, 2435m,pine-oak forest, 19Nov 1993,Hintonetal. 23961 (HOLOTYPE: TEX!). SimilisG. laevigataeMart &Gal. sed tubis calycum fississimis (vice non fissorum)etcorollisparvioribus,ca. 2cm longis(vice2.5-4.0cm longis). Perennial herbs ca. 25 cm high. Stems reddish, minutely hispidulous, the vestiture 0.1 mm high or less. Leaves opposite throughout, gradually reduced upwards. Midstem leaveslinear-lanceolatetosubfalcate, entire, 2-3 cm long, 0.3-0.4 cm wide, umnervate, pubescentlikethestem,especiallyalong the marginsandmidnb. Flowerscirrangedin terminal spike-like racemes 3-13 cm long, the pedicels 4-12 mm long. Bracts at base ofcalyx 2, linear-lanceolate, 6-10 mm long, ca. 0.5 mm wide. Calyces8-12mm long, tub^5-7mm longwitha lateral sinus 3-4 mm deep; lobes 5- 6, linear-lanceolate, 2-4 mm long. Corollas blue, ca. 2 cm long; lobes 5, broadly ovate,apiculate, between these, 1-2appendages 2-3 mm long. Stamens 5, ca. 18 mm long, glabrous; anthers yellow, ca. 2 mm long, basally attached, or nearly so. Capsules(immature)ca. 18 mm long, glabrous; beak ca. 1.5 mm long; stigmas two, mm ca. 0.8 long, sharply recurved. This species belongs to the sect. Pneumonanthe of Gentiana and, except for its deeplycleftcalyx, would key to or near G. laevigata in Pnngle's (1977) u-eatment of the Mexican species of this section. The latter, so far as known, occurs only in the MexicanstatesofChiapasandOaxaca. 118 Turner New Gentiana from NuevoLe6n 119 Figure 1. Gentianahintoniorum B.L. Turner, from holotype. PHYTOLOGIA 120 February 1996 volume80(2):118-120 It is a pleasure to name this apparently localized endemic for the Hinton family, who continue to gamer a remarkable array of endemic plants from northeastern MEXICO. ACKNOWLEDGMENTS I am grateful to Gayle Turner for the Latin diagnosis, and to her and Ted Delevoryasforreviewingthepaper. MariaThompsonprovided the illusU"aUon. LITERATURECITED Pringle, J.S. 1977. Taxonomy and distribution of Gentiana (Gentianaceae) in Mexico. Sida7:174-217.