Figures (5)  Tables (2)

    • Figure 1. 

      Camellia wuzhishanensis. (a), (b) Habitat. (c) Flowering branch. (d) Terminal buds. (e) Side view of the capsule. (f) Front view of the capsule. (g) Seeds. (h) Dry capsules. (i) Interior of dry seeds. (j) Loculicidal pericarps.

    • Figure 2. 

      Chloroplast genome of Camellia wuzhishanensis.

    • Figure 3. 

      Phylogenetic relationships of Camellia wuzhishanensis and related species inferred from maximum likelihood analysis based on complete chloroplast genome sequences.

    • Figure 4. 

      Camellia wuzhishanensis. (a) Flowering branch. (b) Front view of the capsule. (c) Seed. (d) Loculicidal capsule. Illustration by Cheng-Zhi Xie.

    • Figure 5. 

      Comparison of loculicidal pericarps, loculicidal capsules, and seeds between C. wuzhishanensis and C. hainanica.

    • Characteristics C. wuzhishanensis C. hainanica C. drupifera C. osmantha C. fluviatilis
      Ploidy 10 10 8 6 2
      Life form Tree, 12–18 m tall Shrub or small tree,
      3–5 m tall      		 Shrub or small tree,
      2–8 m tall      		 Shrub, 3–4.5 m tall Shrub, 1.5–3.5 m tall
      Branchlets Reddish brown, young pubescent, old glabrous Reddish brown, pubescent Grayish brown, young pubescent, old glabrous Grayish brown, young pubescent, old glabrous Reddish brown, pubescent
      Leaf shape Obovate or obovati-elliptic Elliptic or oblong-elliptic Elliptic or oblong-elliptic Obovate, obovati-elliptic or oblong Lanceolate to narrowly lanceolate
      Leaf size 3.5–5.5 × 1.5–2.5 cm 5–8 × 2–3 cm 5–10 × 2–5 cm 3.5–6 × 1.8–3.5 cm 5–8.5 × 1–2.2 cm
      Flower size 3.5–4.5 cm in diam. 6–9.3 cm in diam. 6–10 cm in diam 2.5–3 cm in diam. 1.5–6 cm in diam.
      Bracteoles
      and sepals      		 8–9 10–12 or more 9 10–12 or more 8–9
      Petals 5–6, 1.5–2.5 × 0.9–2.2 cm 5–7, 3–4.5 × 1.5–3 cm 9, 4.5–6 × 3–4.5 cm 6–8, 1.2–2.2 × 0.9–1.5 cm 5–6, 0.8–3 × 0.4–2 cm
      Stamens 0.8–1.4 cm, glabrous;
      outer filament whorl
      basally connate      		 1.2–1.5 cm, glabrous;
      outer filament whorl basally connate      		 1.2–1.7 cm, glabrous,
      outer filament whorl basally connate      		 0.5–1.1 cm, glabrous;
      outer filament whorl basally connate      		 0.5–0.7 cm, glabrous;
      outer filament whorl basally connate
      Ovary Tomentose, 3-loculed Tomentose, 3-4-loculed Tomentose, 3-5-locular Tomentose, 3-loculed Tomentose, 3-loculed
      Styles Apically 3-lobed to 3-parted, base tomentose 3-4, apically 3-4-parted or distinct nearly to base glabrous or base tomentose Apically 3-lobed to 3-parted, glabrous or base tomentose Apically 3-lobed to 3-parted, base tomentose 3, glabrous, distinct
      nearly to base
      Capsules 1.8–4 cm in diam., pericarp brown, glossy 3–6 cm in diam., pericarp brown, rough 4–6 cm in diam., pericarp green, surface rough and brownish furfuraceous 1.8–2.3 cm in diam., pericarp brown, glossy 1.5–1.7 cm in diam., pericarp brown, glossy
      Distribution within China Hainan, Wuzhishan Hainan Guangxi, Guangdong, and Hainan Guangxi Guangdong, Guangxi, and Hainan

      Table 1. 

      A comparison among C. wuzhishanensis and similar species.

    • Parameter C. wuzhishanensis C. hainanica
      Mean fresh capsules weight (g) 10.5 46.7
      Fresh capsules weight range (g) 3.8–32.3 17.6–107.1
      Mean fresh capsules diameter (cm) 2.6 4.4
      Fresh capsules diameter range (cm) 1.8–4.0 3.3–5.9
      Fresh pericarps thickness range (mm) 1.5–3.0 3.0–7.0
      Mean dry capsules weight (g) 5.1 27.1
      Dry capsules weight range (g) 2.5–14.8 11.9–66.5
      Mean number of seeds per capsule 1.4 5.3
      Number of seeds per capsule range 1–6 1–12
      Mean dry pericarps weight (g) 2.6 13.2
      Dry pericarps weight range (g) 1.0–6.9 5.4–37.9
      Mean total seed weight per dry capsules (g) 2.5 13.9
      Total seed weight per dry capsules range (g) 1.0–9.5 4.8–28.7
      Mean individual dry seeds weight (g) 1.9 2.9
      Individual dry seeds weight range (g) 0.8–3.3 1.2–6.3
      Mean seed proportion of total dry capsules weight (%) 49.5 51.7
      Seed proportion of total dry capsules weight range (%) 26.4–67.0 26.5–77.3
      Mean pollen length (μm) 51.9 57.2
      pollen length range (μm) 41.9–57.8 48.5–64.2

      Table 2. 

      Comparison of capsules, seeds, pericarps, and pollens between C. wuzhishanensis and C. hainanica.