作 者 ：Ma Li-Ming, Hong De-Yuan
期 刊 ：植物分类学报 1990年 3期
关键词：花粉形态进化趋势叶表皮特征铃兰族蜘蛛抱蛋族万年青族；
Keywords:Pollen morphology, Evolutionary trends, Epidermal characters, Convallarieae, Aspidistreae, Rohdeae,
Abstract:
The tribe Convallarieae (sensu Krause 1930) consists of 7 genera, i.e. Con-
vallaria, Speirantha, Reineckia, Theropogon, Tupistra, Rohdea and Aspidistra, but now gen-
erally recognized as two tribes, Convallarieae (the former 4 genera) and Aspidistreae (the
rest). Observed in this work were pollen morphology of 17 species and epidermal characters
of leaves of 12 species. All the 7 genera are covered in observations.
Pollen grains in Convallarieae (s. str.) are all monosulcate and boat-shaped (Plate 1: A-
F). The exine is rather uniformly microperforate (Plate 1: A-F); only Theropogon is ex-
ceptional in this respect: it has rugulate exine (Plate 1: O, P). Tang and Zhang (1985) have
pointed out the heterogeneity of Theropogon in this tribe. Pollen morphology in the tribe
Aspidistreae is widely variable. The genera Tupistra and Rohdea were shown to have mono-
sulcate and boat-shaped pollen grains. Their exine is perforate or reticulate (Plate 1: G-
N). Pollen grains in the genus Aspidistra, however, are nonaperturate and spheroidal. The
exine in the genus varies from crass-rugulate, variously gemmate to tuberculate-baculate (Plate
2; A-H). The pollen morphology of Aspidistra is therefore distinctly different from that of
Tupistra and Rohdea, which supports the Nakai‘s (1936) establishment of the tribe Rohdeae
for Tupistra and Rohdea. Therefore, Krause‘s Convallarieae is reasonably divided into at least
three tribes, Convallarieae (Speirantha, Convallaria, Reineckia and Theropogon), Aspidistreae
(Aspidistra) and Rohdeae (Rohdea and Tupistra). The pollen characters of all the 7 genera
are shown in Table 1. The evolutionary trends of pollen morphology (aperture and exine) in
the three tribes are discussed and our major view-points are shown in Fig. 1.
Observations on epidermal characters of leaves show that in the Convallarieae (s. 1.) sto-
matal apparatuses are all anomocytic; cuticular layer on the upper epidermis is mainly striate-
thickened or rather uniformly thickened (Plate 2: J--P; Plate 3: A-C, F-N), whereas in
the genus Convallaria the cuticular layer is squamosely thickened (Plate 2: I; Plate 3: D, E).
The epidermal characters of leaves in the 7 genera are summarized in Table 2.