Table 2.
Comparison of microscopic features of Dendrobium officinale.
| Sample No. | Cuticle | Epidermis | Fiber | Vascular bundles | Raphide | |||
|---|---|---|---|---|---|---|---|---|
| Thickness | Diameter | Number | Diameter | Number | Diameter | Length | ||
| Tangential | radial | |||||||
| TP-1 | 9–12 | 14–34 | 17–29 | 8–19 | 78–90–102 | 73–125 | 85–229 | 65–68 |
| TP-2 | 10–15 | 16–45 | 15–26 | 12–27 | 52–61–77 | 55–83 | 92–173 | 100–112 |
| TP-3 | 8–13 | 12–29 | 16–37 | 10–28 | 84–92–108 | 61–118 | 80–187 | 75–79 |
| TP-4 | 8–10 | 17–33 | 21–26 | 6–23 | 87–98–111 | 59–100 | 72–183 | 65–71 |
| TP-5 | 8–10 | 13–26 | 20–58 | 8–24 | 84–88–108 | 67–104 | 90–236 | 100–103 |
| TP-6 | 10–11 | 14–39 | 12–25 | 9–25 | 83–92–101 | 46–101 | 60–158 | 76–82 |
| TP-7 | 9–11 | 12–37 | 14–22 | 11–29 | 54–69–86 | 42–140 | 51–147 | 59–96 |
| TP-8 | 10–13 | 23–37 | 10–35 | 8–19 | 84–96–118 | 45–102 | 67–168 | 68–72 |
| TP-9 | 9–10 | 17–27 | 20–30 | 5–18 | 85–92–103 | 45–89 | 50–135 | 53–92 |
| TP-10 | 10–12 | 15–30 | 18–46 | 6–25 | 89–93–108 | 67–103 | 98–159 | 10–15 |
| TP-11 | 10–18 | 13–38 | 18–33 | 6–20 | 79–93–99 | 50–102 | 63–169 | 146–194 |
| TP-12 | 8–12 | 12–28 | 12–26 | 7–24 | 85–97–103 | 48–83 | 62–129 | 62–93 |
| TP-13 | 10––12 | 12–36 | 11–46 | 7–31 | 61–65–97 | 56–119 | 73–196 | 62–156 |
| TP-14 | 8–15 | 13–30 | 12–34 | 6–34 | 89–94–110 | 49–127 | 72–197 | 48–81 |
| TP-15 | 9–21 | 11–39 | 9–31 | 8–37 | 93–109–134 | 54–145 | 71–237 | 52–190 |
| Total | 8–21 | 11–45 | 9–58 | 5–37 | 78(52) –134 | 42–145 | 50–237 | 10–194 |