TABLE 3 in Bulbophyllum xiajinchangense (Orchidaceae; Malaxideae), a new species from China: evidence from morphological and DNA analysis
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TABLE 3. Comparison of diagnostic characteristics for Bulbophyllum xiajinchangense, B. scabratum, B. levinei and B. gedangense. CharacterB. xiajinchangenseB. scabratumB. levineiB. gedangensePseudobulbsConical, 1.2–1.6 × 0.5–0.7 cmOvateSubcylindric or bottle-shaped, 0.5–1.0 × 0.2–0.4 cmConical, 0.9–1.5 × 0.4–0.6 cmLeafNarrowly oblong to obovate-lanceolate, 5.0–9.0 × 0.7–1.2 cmNarrowly oval, 2.5–7.0 × 0.5–1.0 cmOblong to obvate-lanceolate, 3.0–4.0 × 0.5–0.7 cmOblong to obovate-lanceolate, 5.5–7.0 × 0.5–0.7 cmScapeUmbel-like and shortened raceme, 7.0–12.0 Umbel-like and shortened raceme, ca. 7.0 cm, 3–7-flowered cm, 3–7-floweredUmbel-like and shortened raceme, 3.0–5.0 cm, 2–6-floweredUmbel-like and shortened raceme, 7.0–12.0 cm, 3–8-floweredFlower colorPurplish-red, tinged with whitePale yellow-ochreWhite, tinged with purpleYellowish-green, tinged with purpleFloral bractShorter than pedicel and ovary, 4.5–6.0 mm Shorter than pedicel and ovaryShorter than pedicel and ovary, 3.0 mmShorter than pedicel and ovary, 1.5–2.5 mmDorsal sepalOvate-lanceolate, 6.0–7.0 × 2.0–2.5 mm, margins denticulateObovate, 5.0–7.0 × 2.0–4.0 mm, margins denticulateOvate-lanceolate, 4.0–5.0 × 1.5–2.0 mm, margins denticulateOvate, 3.0–3.5 × 3.5–4.5 mm, margins entireLateral sepalFree, 10.0–12.0 × 1.7–2.0 mm, apex long caudateConvergent, 15.0–20.0 × 2.0–4.0 mm, apex long caudateFree, 5.0–5.5 × 1.5–2 mm, apex cuspidateConvergent, 4.0–5.0 × 2.5–3.5 mm, apex abruptly acuteMean lateral/dorsal sepal length ratioca. 2.0ca. 3.0ca. 1.0ca. 1.3PetalBasal white, apex purplish red, 3.5–4.0 × 1.7–2.0 mm, margins denticulate, apex acutePale yellow-ochre, 2.0–3.0 × 1.0–2.0 mm, margins pectinate-serrate, apex acuteWhite, 3.5 × 1.5 mm, margins denticulate, apex long acuminateMargins entire, yellowish-green, apex obtuse, 2.5–3.0 × 3.0–4.0 mm
表3 下金昌石豆兰（*Bulbophyllum xiajinchangense*）、糙茎石豆兰（*B. scabratum*）、莱文石豆兰（*B. levinei*）与岗当石豆兰（*B. gedangense*）的鉴定特征对比 | 特征 | 下金昌石豆兰 | 糙茎石豆兰 | 莱文石豆兰 | 岗当石豆兰 | | --- | --- | --- | --- | --- | | 假鳞茎 | 圆锥形，1.2–1.6 × 0.5–0.7 cm | 卵形 | 近圆柱形或瓶形，0.5–1.0 × 0.2–0.4 cm | 圆锥形，0.9–1.5 × 0.4–0.6 cm | | 叶片 | 狭长圆形至倒卵状披针形，5.0–9.0 × 0.7–1.2 cm | 狭椭圆形，2.5–7.0 × 0.5–1.0 cm | 长圆形至倒卵状披针形，3.0–4.0 × 0.5–0.7 cm | 长圆形至倒卵状披针形，5.5–7.0 × 0.5–0.7 cm | | 花葶 | 伞形花序状缩短总状花序，7.0–12.0 cm，具3–7朵花 | 伞形花序状缩短总状花序，长约7.0 cm，具3–7朵花 | 伞形花序状缩短总状花序，3.0–5.0 cm，具2–6朵花 | 伞形花序状缩短总状花序，7.0–12.0 cm，具3–8朵花 | | 花色 | 紫红色，具白色晕斑 | 淡黄褐色 | 白色，具紫色晕斑 | 黄绿色，具紫色晕斑 | | 花苞片 | 短于花梗和子房，长4.5–6.0 mm | 短于花梗和子房 | 短于花梗和子房，长3.0 mm | 短于花梗和子房，长1.5–2.5 mm | | 中萼片 | 卵状披针形，6.0–7.0 × 2.0–2.5 mm，边缘具细锯齿 | 倒卵形，5.0–7.0 × 2.0–4.0 mm，边缘具细锯齿 | 卵状披针形，4.0–5.0 × 1.5–2.0 mm，边缘具细锯齿 | 卵形，3.0–3.5 × 3.5–4.5 mm，全缘 | | 侧萼片 | 离生，10.0–12.0 × 1.7–2.0 mm，先端具长尾尖 | 靠合，15.0–20.0 × 2.0–4.0 mm，先端具长尾尖 | 离生，5.0–5.5 × 1.5–2 mm，先端具骤尖 | 靠合，4.0–5.0 × 2.5–3.5 mm，先端骤然急尖 | | 侧/中萼片平均长度比 | 约2.0 | 约3.0 | 约1.0 | 约1.3 | | 花瓣 | 基部白色，先端紫红色，3.5–4.0 × 1.7–2.0 mm，边缘具细锯齿，先端急尖 | 淡黄褐色，2.0–3.0 × 1.0–2.0 mm，边缘具栉齿状锯齿，先端急尖 | 白色，3.5 × 1.5 mm，边缘具细锯齿，先端长渐尖 | 全缘，黄绿色，先端钝形，2.5–3.0 × 3.0–4.0 mm |
