討論:台灣龍膽屬物種註記

山羊百科，林文智老師的植物、山岳、攝影紀錄

台灣植物誌第一版

1. Leaves without white or cartilaginous margins, sessile; flowers solitary or 2-4-fasciculate at the end of the branches, 5- (sometimes 4-) merous; capsules long-stipitate..........3. G. atkinsonii formosana

1. Leaves with cartilaginous or white margins, sessile or short petiolate; flowers solitary at the end of branches, 5-merous; capsules with short or long stipes.

2. Stems prostrate: leaves with thin white margins, short-petiolate; style filiform, long;capsules included in the persistent corolla, short-stipitate ……… 7. G. parvifolia

2. Stems erect or ascending; leaves with cartilaginous margins, sessile; style short or none; capsules often exserted beyond the persistent corolla, long-stipitate.

3. Leaves flat, loosely arranged on stem; corolla-lobes acute or acuminate, sometimes minutely aristate at tip.

4. Calyx-lobes broad, ovate to lanceolate or spatulate, the margins minutely scabrous.

5. Stems unbranched; leaves very thick, the apex obtuse; ovary sessile … 10. G. tentyoensis

5. Stems often branched; leaves not as above; ovary stalked.

6. Anthers narrow, linear, 1-3 mm long.

7. Calyx-lobes equal in length, shorter than calyx-tube, ovate-lanceolate, elliptic-ovate or spatulate.

8. Medium-sized plants,10-20 cm tall; flowers rather larger, 20- 25 mm long, yellow or yellowish; corolla-appendages obtuse at apex, obscurely undulate-dentate or entire.......8a. G. scabrida scabrida

8. Very minute plants, less than 3 cm tall; flowers small, less than 10 mm long, whitish; corolla-appendages cuspidate-acute at apex, entire .....8b. G. scabrida horaimontana

7. Calyx-lobes unequal in length, as long as calyx-tube, narrowly lanceolate ...... l. G. angusta

6. Anthers broad, oblong, 0.3 mm long ....... 11. G. tenuissima

4. Calyx-lobes narrow, linear.

5. Corolla-appendages lobed or bidentate at apex; calyx-lobes linear, longer than the calyx-tube.

6. Plants medium-sized, 15-20 cm tall; flowers larger, 18-20 mm long; corolla-lobes broadly ovate, the appendages 2-3-dentate or -lobed, irregularly serrulate at tip ......... 5. G. itzershanensis

6. Plants very small, 2-4 cm tall; flowers smaller, less than 15 mm long; corolla-lobes lanceolate, the appendages bidentate or entire 6. G. loureirii

5. Coiolla-appendages entire, cuspidate-acute at apex; calyx-lobes linear, shorter than the calyx-tube.

6. Plants 4-10 cm tall; flowers larger, 12-15 mm long, stipitate; calyx-lobes entire, the appendages as- long as corolla-lobes ..... 4. G. flavo-maculata

6. Plants 1.5-5 cm tall; flowers smaller, 7-8 mm long, sessile; calyx-lobes minutely scabrid at base, the appendages shorter than corolla-lobes ........9. G. tatakensis

3. Leaves plicate, crowded on stem, especially so on stems bearing no flowers; corolla-lobes obtuse at apex .....2. G. arisanensis

1. Gentiana angusta (Masamune) Liu & Kuo in Bull. Exp. Forest N.T.U. 114: 176. pl. 4. 1974. 狹瓣龍膽 Pl. 950 Gentiana scabrida Hayata var. angusta Masamune in Trans. Nat. Hist. Soc. Form. 29: 64. 1939.

Stems usually branched, purple or dark-purple, densely scabrous, 11-15 cm tall. Leaves aristate-acuminate at apex, slightly scabrous, the margins white, obscurely scabrous; radical leaves lanceolate or sometimes ovate, 10-20 mm long, 5-7 mm wide; cauline leaves lanceolate to linear-lanceolate, 8-15 mm long, 3-5 mm wide; sheaths about 2 mm long. Flowers pedicellate, solitary on terminal branches; pedicels 2-8 mm long. Calyx-tube campanulate, 7 mm long, with 5 scabrous costae, 5-lobed; the lobes unequal in length, nearly as long as the calyx- tube, narrowly lanceolate or lanceolate, acuminate-aristate at apex, 6-7 mm long, the margins white, minutely scabrous. Corolla campanulate, 20-25 mm long, 5-lobed, the lobes ovate, 5 mm long, aristate-acuminate at apices; sinuses plicate with ovate-triangular appendages; appendages acute or cuspidate at apices, entire or nearly so. Stamens 5, the anthers narrow, 3 mm long, the filaments attached slightly above the base of the corolla-tube. Ovary shortly stipitate, lanceolate, 10 mm long, the stipe 2-3 mm long; style 7 mm long, the stigma bifurcate. Capsules obovate, 10 mm long, the stipe 20 mm long, exserted beyond the persistent corolla. Seeds ovate, 1 mm long, winged, with minutely longitudinal reticulate-striae.

Endemic. In the northeastern part of the central mountain range at about 3,200 m in altitudes. ILAN: Nanhutashan, Masamune & Mori s. n. July 15, 1931 (Type coll of Gentiana scabrida Hayata var. angusta Masamune); Chungyangchienshan, Suzuki & Fukuyama 15164.

This species was treated by Masamune as a variety of Gentiana scabrida Hayata in 1939, but according to our observation, although it bears a close resemblance to Gentiana scabrida in external morphology, it is distinctly separable from the latter by the following characters: The radical and cauline leaves are not of the same shape, the calyx-lobes are lanceolate and unequal in length, and are nearly as long as the calyx-tube, the corolla-appendages are acute or cuspidate at apex, entire or nearly so along the margins, the filaments are attached to the corolla a little above the base, and the ovary is lanceolate and shortly stipitate.