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FIGURE 1. Camellia proensis. A, B. Young twig. C, E in Camellia proensis (Theaceae, sect. Piquetia), a new species from Southern Vietnam

FIGURE 1. Camellia proensis. A, B. Young twig. C, E. Flowering shoot and arrangement of petals. D. Open flower. F, G. Fruits. H. Seeds. Photos by Quach Van Hoi.

FIGURE 4. Morphological comparison between Camellia langbianensis and C. vidalii. A, D in Rediscovery of Camellia langbianensis (Theaceae) in Vietnam

FIGURE 4. Morphological comparison between Camellia langbianensis and C. vidalii. A, D. Indumentum of pedicel; B, E. Indumentum of abaxial bracteole; C, F. Indumentum of adaxial bracteole; G, J. Indumentum of abaxial sepal; H, K. Indumentum of adaxial sepal; I, L. Indumentum of abaxial petal; M, P. Indumentum of adaxial petal; N, Q. Indumentum at the base of inner filaments; O, R. Indumentum of the style. C. langbianensis: A–C, G–I, M–O photoed by L. V. Dung from V. D Luong. & Q. C. Truong DL190401 (DLU); C. vidalii: D–F, J–L, P–R photoed by S. X. Yang from S. X. Yang et al. 6237 (KUN).

FIGURE 3. Camellia langbianensis. A in Rediscovery of Camellia langbianensis (Theaceae) in Vietnam

FIGURE 3. Camellia langbianensis. A. Habitat; B. Young branches; C. Flower bud; D. Adaxil surface of leaf blade; E. Abaxial surface of leaf blade; F. Flower, back view; G. Flower, top view; H. Petals; I. Androecium; J. Sepals and gynoecium; K, L, M. Fruits; N. Dehisced capsule; O. Seeds. Photoed by Truong Quang Cuong (A–C), Luong Van Dung (D–O).

FIGURE 2 in Rediscovery of Camellia langbianensis (Theaceae) in Vietnam

FIGURE 2. The morphology of Camellia langbianensis. A. Leaf, adaxial view; B. Venation detail of leaf (lower surface); C. Flower, lateral view; D, E. Flower, top view; F. Inner surface of bractlets; G. Inner surface of sepals; H. Inner surface of petals; I. Androecium; J. Stamens; K. Sepals and gynoecium; L. Cross section of ovary; M. Fruit; N. Dehisced capsule; O. Seeds. Draw by Luong Van Dung.

opennotspecifiedNov 2022View details →

FIGURE 2 in Camellia piloflora (Theaceae), a new yellow camellia from Guangxi, South China

FIGURE 2. Morphological comparison between Camellia piloflora (A–D) and C. debaoensis (E–H). A, E. Indumentum of Ovary; B, F. Indumentum of inner filaments; C, G. Indumentum of outer filaments; D, H. Abaxial sepal.

opennotspecifiedMay 2023View details →

FIGURE 2 in Taxonomic notes on Camellia crassicolumna and its related species (Theaceae)

FIGURE 2. Morphological comparisons between Camellia crassicolumna (A, C, E) and C. kwangsiensis var. kwangnanica (B, D, F). A, B. Young branches and terminal buds. C, D. Ovaries. E, F. Abaxial surface of sepals and petals. Photos A, C, E by S.X. Yang and photos B, D, F by Li-Juan Luo and Qiang Fan (SYS).

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FIGURE 1 in Taxonomic notes on Camellia crassicolumna and its related species (Theaceae)

FIGURE 1. Type specimens of Camellia crassicolumna (C.P. Tsien 644, PE00024303) (A), C. kwangsiensis var. kwangnanica (B.H. Chen et al. A20002, SYS00095169) (B) and C. atrothea (B.H. Chen et al. A21002, SYS00095178) (C). Photo A by S.X. Yang, photos B and C from CVH (https://www.cvh.ac.cn/).

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FIGURE 2. Camellia suddeeana. A in Camellia suddeeana (Theaceae), a new species from Thailand

FIGURE 2. Camellia suddeeana. A: branchlet; B–D: flowers; E: flower without petals and androecium; F: fragment of a dry flower, with some sepals removed to show gynoecium; G: dry carpels and seeds. A–E: the plant of S. Suddee et al. 4981 (type); F: Chermsirivathana 1185 (BKF, paratype); G: Niyomdham 4925 (BKF, paratype). The bars indicate 2 cm (in A and G) and 5 mm (in B–F). Photos A–E were taken by Wittawat Kiewbang (BKF) and F–G by Dongwei Zhao.

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FIGURE 1 in Camellia suddeeana (Theaceae), a new species from Thailand

FIGURE 1. The holotype of Camellia suddeeana, S. Suddee et al. 4981 (BKF SN235114!). Image scanned by BKF.

Fig. 4. Amino acid sequences alignment between TCS1 and candidate N in Discovery and Biochemical Characterization of N-methyltransferase Genes Involved in Purine Alkaloid Biosynthetic Pathway of Camellia gymnogyna Hung T.Chang (Theaceae) from Dayao Mountain

Fig. 4. Amino acid sequences alignment between TCS1 and candidate N-methyltransferase genes (GCS1, GCS2, and GCS3).

Fig. 2 in Discovery and Biochemical Characterization of N-methyltransferase Genes Involved in Purine Alkaloid Biosynthetic Pathway of Camellia gymnogyna Hung T.Chang (Theaceae) from Dayao Mountain

Fig. 2. Purine alkaloid content in different leaf positions of C. gymnogyna and other tea plants. Bud, 1st, 2nd, 3rd, 4th, and 5th represent the apical bud, first leaf, second leaf, third leaf, and fourth leaf, respectively. Total purine alkaloid concentration is the sum of Tb, Cf, and Tc. Asterisk indicates not detected. A lack of sufficient Kucha bud samples prohibited the analysis of that component. Data represent the mean value ± SD of independent experiments performed in triplicate. Data with the same letter and numeric above SD bar in each column are not significantly different from each other at P ≦ 0.05. Data with alphabet are significantly different from the data with numeric above SD bar.

Fig. 6. N in Discovery and Biochemical Characterization of N-methyltransferase Genes Involved in Purine Alkaloid Biosynthetic Pathway of Camellia gymnogyna Hung T.Chang (Theaceae) from Dayao Mountain

Fig. 6. N-methyltransferase gene expression patterns in different leaf positions of C. gymnogyna and other tea plants. Bud, 1st, 2nd, 3rd, 4th, and 5th represent the apical bud, first leaf, second leaf, third leaf, and fourth leaf, respectively.

Fig. 5 in Discovery and Biochemical Characterization of N-methyltransferase Genes Involved in Purine Alkaloid Biosynthetic Pathway of Camellia gymnogyna Hung T.Chang (Theaceae) from Dayao Mountain

Fig. 5. Phylogenetic tree of N-methyltransferase amino acid sequences. Substrates of the enzymes are indicated in parentheses. The following amino acid sequences were subjected to sequence alignment: TCS1, AB031280; CKCS, MN163829; TCS1d, KT215399; TCS1f, KT215398; TCS1e, KT215397; CkTcS, MN163831; CkTbS, MN163830; ICS1, AB056108; PCS1, AB207817; ICS2, AB207816; PCS2, AB207818; TCS2, AB031281; CkCS1, AB362884; CjCS1, AB297451; CgCS1, AB362882; CgCS2, AB362883; ClCS1, AB362885; CsSAMT, MG459470. Abbreviations of substrates are as follows: 7-mX, 7-methylxanthine; Tb, theobromine; Tc, theacrine; XR, xanthosine; CsSAMT as a outgroup.

Fig. 1 in Discovery and Biochemical Characterization of N-methyltransferase Genes Involved in Purine Alkaloid Biosynthetic Pathway of Camellia gymnogyna Hung T.Chang (Theaceae) from Dayao Mountain

Fig. 1. Main metabolic pathway for the biosynthesis and biodegradation of Cf. SAM = S-adenosyl- L -methionine, SAH = S-adenosyl- L -homo-cysteine. (b). Numbers (I, II, III, and IV) in (b) correspond to the reactions I, II, III, and IV in (a), respectively. TCS1 and CkCS have broad substrate specificities and catalyze the conversion of 7-mX to Cf via Tb [reactions II and III in (a)].

Fig. 3 in Discovery and Biochemical Characterization of N-methyltransferase Genes Involved in Purine Alkaloid Biosynthetic Pathway of Camellia gymnogyna Hung T.Chang (Theaceae) from Dayao Mountain

Fig. 3. Gene annotation. (a) Venn diagram; (b) The results of volcano plots of differential genes between the experimental groups; (c) GO annotation of DEGs; (d) The top 20 KEGG pathways of DEGs.

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FIGURE 1 in Camellia renshanxiangiae, a synonym of C. punctata (Theaceae)

FIGURE 1. The lectotype of C. punctata (K000380528) (A) and an isotype of C. renshanxiangiae (PE01598414) (B).

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FIGURE 3 in Camellia renshanxiangiae, a synonym of C. punctata (Theaceae)

FIGURE 3. Morphological comparison between Camellia punctata (A–C, G, H) and C. renshanxiangiae (D–F, I, J). A, D. Stamens (outside view). B, E. Stamens (inside view). C, F. Pistils. G, I. Hairy anthers. E, L. Abaxial surface of inner petals. Photos by S.X. Yang.