Groutiella reesei (Vitt) B.H. Allen, 2002

Yu, Ning-Ning & Jia, Yu, 2023, A world revisionary study of the genus Groutiella Steere (Orthotrichaceae, Bryopsida), Cryptogamie, Bryologie 20 (7), pp. 161-182 : 174

Groutiella reesei (Vitt) B.H. Allen

( Fig. 10 )

Monographs in Systematic Botany from the Missouri Botanical Garden 90: 551 ( Allen 2002).

SPECIMENS EXAMINED. — Mexico. Veracruz, Huatusco Municipio, Reese 4450 (MO); Reese 4451 (para-, MO).

DISTRIBUTION AND HABITAT. — Mexico; Central America ( Allen 2002). On bark of tree trunks and branches; 545-1250 m.

DESCRIPTION

For description, see Vitt 1979, 1994; Allen 2002.

COMMENTS

Groutiella reesei was published as a subspecies of G. chimborazensis by Vitt (1979), but later promoted to the rank of species by Allen (2002) based on two leaf features: the bulging quadrate cells on the upper dorsal surface of the costa, and the thickened ( Fig. 10K ), fragile and frequently broken leaf apices ( Fig. 10D, G, J ). Including these two characters, the species further differs from G. chimborazensis by having much lower leaf marginal border that consists of two rows of short-rectangular to rectangular cells ( Fig. 10L ). Groutiella tomentosa also has fragile apices, but differs in its longer leaf limbidia consisting of elongated cells.

Figures

FIG. 10. — Groutiella reesei (Vitt) B.H. Allen: A, plant; B, branches when dry; C, branches when wet; D-J, leaves; K, apical leaf cells; L, basal marginal leave cells. All from Reese 4451, paratype of G. reesei, MO. Scale bar: A, 5.6 mm; B, 1.9 mm; C, 2.1 mm; D-J, 0.7 mm; K, 73 µm; L, 76 µm. Credits: Yu N.-N.