討論:台灣黃鵪菜屬物種註記

山羊百科，林文智老師的植物、山岳、攝影紀錄

1. Heads less than 1.5 cm wide; involucral bracts 4-6 mm long.

2. Leaves entire to lyrate-pinnatifid; achenes brown, less than 2 mm long... 1a. Subsp. Japonica

2. Leaves pinnatifid-runcinate; achenes reddish-brown to dark purple; 2-2.5 mm long.... 1b. Subsp. Formosana

1. Heads more than 1.5 cm wide; involucral bracts 6-8 mm long..... 1c. Subsp. Longiflora

1. Youngia japonica (L.) DC., Prodr. 7: 194. 1838; Kitamura, Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol. 22: 117. 1955; Li, Fl. Taiwan 4: 962, pl. 1264. 1978.

Prenanthes japonica L., Mant. Pl. 107. 1767.

1a. Subsp. Japonica 黃鵪菜

Pubescent biennials; stems erect, often branched at base, 20-100 cm long. Radical leaves thin, rosulate, oblanceolate, 8-25 x *1.7-6 cm, acute, base narrowed to a petiole, lyrate-pinnately parted, loosely mucronulate-dentate, slightly crisp puberulous on both surfaces, terminal segments largest, deltoid-ovate, usually rounded, lateral segments gradually smaller. Heads 7-8 mm across, many, in terminal corymbose panicles; peduncle 6-25 mm long, slender. Involucre 4-6 x *3-4 mm, calyculate, outer bracts few, much smaller than inner, ovate, ca. 0.5 mm long, inner bracts 8, lanceolate, obtuse. Flowers 17-19, yellow, 5-8 mm long. Achenes oblong, ca. 1.8 mm long, brown, apex gradually narrowed, with 11-13 scaberulous ribs. Pappus white, ca. 3 mm long, persistent.

A variable species widely distributed from southeastern Asia to Australia. Taiwan, very common in wastelands, cultivated fields and on roadsides.

TAIPEI: Nanya, Peng 14949. ILAN: Lotung, Yang 4656. TAOYUAN: Lungtan, Peng 13690. HSINCHU: Hengshan, Peng 12150. MIAOLI: Taian, Lin 535. NANTOU: Sun Moon Lake, Peng 10411. CHIAYI: Chiayi, Yen 10566. KAOHSIUNG: Shoushan, Yang 324; Tengchih, Peng 11228. PINGTUNG: Wanluan, Peng 10178. TAITUNG: Lanyu Is., Peng 10659. HUALIEN: Taroko, Peng 15447; Mukuahsi, Peng 15417.

1b. Subsp. Formosana (Hayata) Kitam., Acta Phytotax. Geobot. 6: 234. 1937; Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol. 22: 120. 1955. 臺灣黃鵪菜

Crepis formosana Hayata, J. Coll. Sci. Univ. Tokyo 30(1): 163. 1911 (Mater. Fl. Formosa); Icon. Pl. Formosan. 8: 79. 1919. Youngia formasana (Hayata) Yamam., J. Trop. Agric. 8: 357. 1936. Youngia japonica (L.) DC. Var. formosana (Hayata) H. L. Li, Fl. Taiwan 4: 965. 1978.

Radical leaves usually velutinous, thick. Flowering branches 7-17 cm tall. Heads 1.2-1.5 cm across, involucre 5 mm long, corolla ca. 7.5 mm long. Achenes reddish brown to dark purple, 2-2.5 mm long.

Endemic; mountains, 1,500-2,500 m, common.

ILAN: Tatung, Peng 15264; Taipingshan, Peng 7852. MIAOLI: Kuanwu, Peng 9443. TAICHUNG: Wuling Farm, Peng 1192; Techi, Peng 12474. NANTOU: Tungpu to Kuankao, Peng 8033; Shemu village, Peng 10897. CHIAYI: Alishan, Peng 4605. PINGTUNG: Wutai, Wang 1011; Chihpenchushan, Lin 400. TAITUNG: Haituan, Hsiangyang, Peng 11890. HUALIEN: Tayuling, Peng 9148; Hoping Forest Road, Peng 5818.

1c. Subsp. Longiflora Babc. & Stebbins, Publ. Carnegie Inst. Wash. No. 484: 95. 1937. 大花黃鵪菜

Youngia longiflora (Babc. & Stebbins) C. Shih, Fl. Reipul. Popul. Sin. 80(1): 150. 1997. Youngia taiwaniana S. S. Ying, Colour. Ill. Herb. Pl. Taiwan 1: 186. 1980.

Annual or biennial herbs, 30 to 85 cm tall. Heads more than 1.5 cm across; involucre 6-8 mm long; corolla ca. 10 x *1.25 mm. Achenes dark purplish brown, 2-2.6* mm long. Pappus ca. 3.5 mm long.

Southeastern China. Taiwan, restricted to littoral regions in the north, rare.

TAIPEI: Kungliao, Nanya, Peng 14948; Patoutze, Peng 7566.