A world revisionary study of the genus Groutiella Steere (Orthotrichaceae, Bryopsida) Author Yu, Ning-Ning Author Jia, Yu State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093 (China) yjia @ ibcas. ac. cn (corresponding author) yjia@ibcas.ac.cn text Cryptogamie, Bryologie 2023 2023-07-12 20 7 161 182 http://dx.doi.org/10.11646/zootaxa.4878.3.2 journal article 10.5252/cryptogamie-bryologie2023v44a7 1776-0992 8155687 Groutiella chimborazensis (Spruce ex Mitt.) Florsch. ( Fig. 6 ) Flora of Suriname 4: 215 ( Florschütz-de 1964 ) . SPECIMENS EXAMINED . — Belize . Cayo , Southern Maya Mountains, Allen 15133 (MO). Bolivia . Santa Cruz , Velasco, Fuentes 1049 ( MO ). Brazil . Rondônia , Serra dos Pacaás Novos, Reese 13734A ( MO ); Pará, Rio Jamanxím, Reese 16683 ( MO ). Colombia . Magdalena , Santa Marta Municipio, Churchill & Linares 18411 ( MO ). Costa Rica . San José , Cordillera Talamanca, Holz CR 99-0960 ( MO ); Puntarenas , Crosby 2499B ( MO ); Heredia , Volcan Barba, Crosby 9934 ( MO ); Chm-cewh? forch-Ou Barba, 1890, Louduz s.n. ( NSW ). FIG . 3. — Capsules, peristome and spores of Groutiella Steere : A , G. apiculata (Hook.) H.A. Crum & Steere ; B , D , E , G. husnotii (Schimp. ex Besch.) H.A. Crum & Steere ; C , G. tumidula (Mitt.) Vitt. ; F , H , G. wagneriana (Müll. Hal.) H.A. Crum & Steere ; G , G. obtusa (Mitt.) Florsch. A from Allen 15136 (MO); B , D , E from Steere 7180 (MO); C from Vital 2319 (MO); F , H from Pringle 10560 (MO); G from Liesner 16772A (NSW).Scale bars:A-C,3 mm; D, 250 µm;E,25 µm;F,G,5 µm;H, 2.5 µm. FIG . 4. ― Groutiella apiculata (Hook.) H.A. Crum & Steere : A , habit; B -F , leaves; G -H , apical leaf cells; I , medical and basal leaf cells with margin; J , portion of peristome; K , spores. A from Allen 14033B (MO); B , D from Allen 15136 (MO); C from Allen 17979 (MO); E , G from Chávez 254 (MO); F , H , I from Allen 19386 (MO); K from Steere 6792 (MO). Scale bar: A, 2 mm; B-F, 0.5 mm; G, H, 80 µm; I, 100 µm; J, K, 50 µm. Credits: Yu N.-N. FIG . 5. ― Groutiella apiculata (Hook.) H.A. Crum & Steere : A , plant when dry; B , plant when wet; C -G , leaves; H , apical leaf cells; I , marginal leaf cells. All from Wagner s.n. (NY), syntype of G. wagneriana (Müll. Hal.) H.A. Crum & Steere. Scale bar: A, 0.6 cm; B, 4.5 mm; C-G, 0.7 mm; H, 53 µm; I, 105 µm. Credits: Yu N.-N. Ecuador . Andes Quitenses, ad radices occidentalis montis Chimborazo (3500 ped.), Spruce n. 110 (syn-, NY); Cotopaxi , Rio Pilaló, L. Holm-Nielsen et al. 3144 ( MO ). Guatemala . Laguna del Pino, Bernoulli & Cario 47 ( syntype of Macromitrium semimarginatum , HBG ); Jalapa , Jalapa , Clover 10206 ( MO ). Guyana . Rupununi, Kanuku Mts, Maas & Westra 3880 ( MO ). Honduras . Lempira , Gracias, Allen 11845 ( MO ). Mexico . Jalisco , Rio Blanco, Pringle 10560 (isotype of G. undosa , MO ); Michoacán , Uruapan Municipio, Landry 23.6 ( MO ); Querétaro , Landry 15.6 ( MO ); San Luis Potosi , Antiguo Morelos , R.A. Pursell 5422 ( MO ); Sinaloa , Panuco, Pursell s.n. ( MO ); Tamaulipas , Rancho del Cielo, M.G. Manuel 169 ( MO ). Nicaragua . Matagalpa , Esquipulas, Stevens 11909 ( MO ). Panama . Chiriquí , Boquete, Crosby 3972 ( MO ); Croat 67935 ( MO ); Cerro Horqueta, D’Arcy 6481 ( MO ). DISTRIBUTION AND HABITAT . — The tropical region of America, north to Mexico , south to Bolivia ( Santa Cruz ). On bark of tree trunks and upper branches, rarely on soil; 880-2600 m . DESCRIPTION For description, see Grout 1946 ; Bartram 1949 ; Vitt 1994 ; Churchill & Linares 1995 ; Allen 2002 . COMMENTS The leaves of G. chimborazensis are lanceolate, and the costa are excurrent, end below or in the apex. There is a variation in the apex and lamina. The apex could be acute to sharply acuminate, which can be found in one specimen .The lamina is usually plane, but also can be undulate. G. macrorrhyncha is very similar to G. chimborazensis in having lanceolate leaves. It differs from G. chimborazensis in having a stoutly excurrent costa.