1、Taiwania, 53(3): 308-310, 2008 Leptolejeunea picta Herz., a Liverwort New to Taiwan Jia-Dong Yang(1,2)and Shan-Hsiung Lin(2,3)(Manuscript received 20 March 2008; accepted 2 June 2008) ABSTRACT: Leptolejeunea picta Herz. is reported as a new liverwort species to Taiwan. A revised species description
2、and illustration are provided along with information on the distribution and habitat for this species. KEY WORDS: Leptolejeunea picta, Lejeuneaceae, liverwort, new record, Taiwan. INTRODUCTION There are six species of the genus Leptolejeunea in Taiwan (Lin, 2000; Piippo, 1990). The first author coll
3、ected two specimens in Chikeshan, Yuli Township, Hualien County during in 2007. After checking references and specimens we determined that the Chikeshan collections represent L. picta Herz., a species new for the Taiwan bryoflora. This species is similar to L. elliptica (Lehm. however, L. picta diff
4、ers from L. elliptica in its dark-red ocelli scattered over the leaf lobes, lobules and underleaves. Leptolejeunea picta is a tropical species distributed from Indo-China, Sumatra, Borneo, New Guinea, and Ryukyu Archipelago (Mizutani, 1978). Voucher specimens for this study are deposited at the herb
5、arium of Endemic Species Research Institute (TAIE). TAXONOMIC TREATMENT Leptolejeunea picta Herz., Flora 35: 430 (1942). 斑點薄蘚 Fig. 1 Plants small, lightly green when fresh, dark brown when dried. Shoots 0.50-0.60 mm wide, irregularly pinnately branched. Stems up to 10 mm long, 35.6-52.9 m in diamete
6、r. Ventral merophytes of stem 2 cells wide, rhizoids numerous, fasciculate. Leaves imbricate, leaf lobe flat, ovate, 0.31-0.34 mm _ 1. Endemic Species Research Institute, 1, Min-Sheng E. Rd., Chi-Chi Town, Nantou County 55244, Taiwan. 2. Department of Life Science, Tunghai University, 181, Sect. 3,
7、Taichung-Kang Rd., Taichung 40704, Taiwan. 3. Corresponding author. Tel: 886-4-23590121 ext. 32406; Email: slinthu.edu.tw long, 0.16-0.17 mm wide, apex obtuse to rounded, margin entire. Lobe cells thin-walled, trigones small, marginal cells 14.9-20.2 10.4-14.4 m, median cells 20.1-31.6 10.8-20.7 m,
8、basal cells slightly larger than median ones. Cuticle smooth. Oil bodies 6-15 per median cell of leaf lobe, of the compound type. Ocelli dark red when plants dried, scattered, basal ocelli 1-2, very large, 33.8-79.9 14.8-24.9 m, median ocelli 16.9-27.2 14.1-16.9 m. Lobule 1/3-1/2 the length of the l
9、obe, oblong, inflated, the first tooth unicellular, obtuse, the second tooth obsolete, the hyaline papilla on the proximal side of the first tooth. Underleaves 0.76-1.16 mm long, 0.54-1.04 mm wide, distant, transversely inserted, the basal portion usually with one blunt tooth on each lateral margin,
10、 the upper margin usually composed of 2 ocelli, the lobe linear, 2- celled. Distribution: Indo-China, Sumatra, Borneo, New Guinea, and Ryukyu Archipelago. New to Taiwan. Specimens examined: TAIWAN, Hualien: Yuli, Chikeshan, near the Fute Temple, creek bank, mixed hardwood forest, epiphyllous, on lea
11、ves of fern Osmunda banksiifolia (Presl) Kuhn, ca. 850 m alt., E 12123; N 2323, Oct. 18, 2007, J.D. Yang 4734g (TAIE), J.D. Yang 4735f (TAIE). Comment: Growing on the leaves of Osmunda banksiifolia, L. picta usually occupied the middle part of the pinnule and associated with many common and wild distributed epiphyllous liverworts, such as L. elliptica, Cololejeunea floccosa (Lehm. Email: slinthu.edu.tw
