Nuclear and cpDNA Sequences Demonstrate Spontaneous Hybridization Between Goodyera schlechtendaliana Rchb. f. and G. velutina Maxim. (Orchidaceae) in Jeju Island, Korea

Exploring natural hybridizations among <i>Asplenium ruprechtii</i> and related taxa in Korea

“…Chang Shook LEE, Sung Hee YEAU and Kyong-Sook CHUNG counterbalance selection against the hybrids and hybrid derivatives (Ellstrand et al, 2007). Alternatively, hybridization might be very rare, but the individuals of hybrid ancestry might be maintained largely by selective advantages (Ellstrand et al, 2007;Lee et al, 2012). Asian walking fern, Asplenium ruprechtii Sa.…”

“…DNA sequence data have been utilized to clarify parental taxa of hybrid origin groups. Chloroplast DNA has been instrumental in revealing interspecific hybridization and in documenting the hybrid origin region of several vascular plant species (Rieseberg, 1995;Arnold, 1997;Cronn et al, 2003;Lee et al, 2012). To infer maternal genetic histories rbcL, rps4-trnS, and rps4-trnS Intergenic spacers have provided critical information in many fern groups (Murakami et al, 1999;Skog et al, 2004;Wei et al, 2013).…”

Morphological, ecological, and molecular phylogenetic approaches reveal species boundaries and evolutionary history of Goodyera crassifolia (Orchidaceae, Orchidoideae) and its closely related taxa

“…Detailed morphological examination revealed that G. crassifolia can be distinguished from G. schlechtendaliana by not only column shape (column with vs. without lateral appendages) but also plant height (20-37 cm vs. ca. 15 cm), leaf texture (coriaceous vs. papyraceous), leaf coloration (glossy green, with narrow pale-white reticulation, to green with no decorations vs. green with obvious and broad white reticulation), inflorescence architecture (lax, internodes 17-24 mm long at inflorescence base vs. dense internodes 6-10 mm long at inflorescence base), pedicellate ovary length (11-20 mm, longer than floral bract vs. 7-9 mm, as long as the floral bract), flower opening (opening weakly vs. widely), flower size (sepal and petal length > 10 mm vs. < 10 mm), shape of lateral sepal (recurved at two-thirds of its entire length from the base vs. strongly recurved at half its entire length from the base), hypochile shape (weakly vs. strongly concave-saccate), and seed shape (often polyembryonic vs. always monoembryonic) (Lee et al 2010(Lee et al , 2012 It should be noted that G. crassifolia has previously been confused with G. ×tamnaensis in Japan (Takahashi 1985;Akiyama 2010; The Flora-Kanagawa Association 2018). In fact, G. crassifolia is superficially similar to G. ×tamnaensis in terms of its weakly opening flowers but differs in plant height (20-37 cm for G. crassifolia vs. 10-15 cm for G. ×tamnaensis), leaf texture (coriaceous vs. papyraceous), leaf coloration (glossy green with narrow, pale-white reticulation to green with no decoration on upper surface vs. velutinous dark green with a white central vein and reticulate venation), ovary and pedicel length (11-20 mm vs. 7-10 mm long), flower size (petal and sepal length > 10 mm vs. < 10 mm), column shape (column with vs. without lateral appendages), and rostellum shape (acuminate apex, occasionally bi-or trilobed vs. flattened and cuneate apex, never divided) (Lee et al 2010(Lee et al , 2012Bhattacharjee and Chowdhery 2012;Suetsugu et al 2021b).…”

“…Although the taxon had not been formally described until recently, it was often considered a natural hybrid of G. schlechtendaliana and G. similis ( Takahashi 1985 ; Akiyama 2010 ; The Flora-Kanagawa Association 2018 ). Notably, the natural hybrid between G. schlechtendaliana and G. similis was described as G. × tamnaensis in Jeju Island, South Korea ( Lee et al 2010 , 2012 ). Suetsugu et al (2021b) later reported the first occurrence of G. × tamnaensis on the Boso Peninsula, Chiba Prefecture, Japan.…”

The evolutionary and systematic significance of hybridization between taxa ofSpiranthes(Orchidaceae) in the California Sierra Nevada and Cascade Range

“…(Russell & al., ), and Goodyera R.Br. (Lee & al., ). Additional orchid genera in which hybridization may play an important role in speciation, but which lack molecular data, include Sobralia Ruiz & Pav.…”