藤构Broussonetia kaempferi Sieb. var. australis Suzuki
藤构Broussonetia kaempferi Sieb. var. australis Suzuki
3b. 藤构（四川） 蔓构（云南） 图版7: 9-13
Broussonetia kaempferi Sieb. var. australis Suzuki in Trans. Nat. Hist. Formosa 24: 433. 1934; Yamazaki in Journ. Phytogeogr. Taxon. 30(2): 69, f. 4-2. 1982. —— Broussonetia Kaempferi auct. non Sieb: Forbes et Hemsl. in Journ. Linn Soc. Bot. 26: 455. 1894; Hayata, Mat. Fl. Formos.: 273. 1911; Schneid. in Sarg., Pl. Wils. 3: 304. 1917, P. P., excl. Pl. Korea et Japan; Merr. et Chun in Sunyats. 273. 1934; Kanehira, Formos. Trees, rev. ed.: 146. 1936; Li, Woody Fl. Taiwan: 113. 1963; 湖北植物志 1: 144. f. 181. 1976; 云南种子植物名录, 上册: 699. 1984; 湖北植物大全: 266. 1992; 浙江植物志, 2: 85, f. 2-110. 1992. —— B. kazinoki auct. non Sieb.: Gagnep. in Lecomte, Fl. Gen. Indo-Chine 5: 718, f. 87-14-18. 1929; Liu, Ill. Lign. Pl. Taiwan 2: 707, f. 561. 1962; 海南植物志 2: 378, f. 485. 1965; 中国高等植物图鉴 1: 481, f. 961. 1972. p. p., 台湾植物志 2: 120, pl. 234, except the palmatisect leaf. 1976.
蔓生藤状灌木；树皮黑褐色；小枝显著伸长，幼时被浅褐色柔毛，成长脱落。叶互生，螺旋状排列，近对称的卵状椭圆形，长3.5-8厘米，宽2-3厘米，先端渐尖至尾尖，基部心形或截形，边缘锯齿细，齿尖具腺体，不裂，稀为2-3裂，表面无毛，稍粗糙；叶柄长8-10毫米，被毛。花雌雄异株，雄花序短穗状，长1.5-2.5厘米，花序轴约1厘米；雄花花被片4-3，裂片外面被毛，雄蕊4-3，花药黄色，椭圆球形，退化雌蕊小；雌花集生为球形头状花序。聚花果直径1厘米，花柱线形，延长。花期4-6月，果期5-7月。
产浙江（龙泉至各地）、湖北、湖南、安徽、江西、福建、广东、广西、云南、四川、贵州、台湾等省区。多生于海拔308-1000米，山谷灌丛中或沟边山坡路旁。
韧皮纤维为造纸优良原料。
《Flora of China》 Vol. 5 (2003)
Broussonetia kaempferi Siebold var. australis Suzuki
藤构 teng gou
Broussonetia sieboldii Blume.
Shrubs, scandent, flowers always produced on leafy stems; dioecious. Bark blackish brown. Branchlets conspicuously spreading, pale gray pubescent when young, glabrescent. Leaves spirally arranged; petiole 0.8-1 cm, pubescent; leaf blade ± ovate-elliptic, simple or occasionally 2- or 3-lobed, 3.5-8 × 2-3 cm, scabrous and glabrous, base cordate to cuneate, margin finely serrate with glandular serrations at apex, apex attenuate to shortly acuminate. Male inflorescences spicate, 1.5-2.5 cm. Female inflorescences globose. Male flowers: calyx 3- or 4-lobed, adaxially pubescent; anthers yellow, elliptic-globose. Female flowers: style linear, exserted. Syncarp ca. 1 cm in diam., with stellate clusters of stout strongly barbed hairs. Fl. Apr-Jun, fr. May-Jul.
* Scrub, along trails on slopes; 300-1000 m. Anhui, Chongqing, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Taiwan, SE Yunnan, Zhejiang.
Broussonetia kaempferi var. kaempferi is endemic to Japan.
The bark fibers are used for making paper.
别名：楮;蔓构;葡蟠;小构树;
科名：桑科 Moraceae
属名：构属 Broussonetia
3b. 藤构（四川） 蔓构（云南） 图版7: 9-13
Broussonetia kaempferi Sieb. var. australis Suzuki in Trans. Nat. Hist. Formosa 24: 433. 1934; Yamazaki in Journ. Phytogeogr. Taxon. 30(2): 69, f. 4-2. 1982. —— Broussonetia Kaempferi auct. non Sieb: Forbes et Hemsl. in Journ. Linn Soc. Bot. 26: 455. 1894; Hayata, Mat. Fl. Formos.: 273. 1911; Schneid. in Sarg., Pl. Wils. 3: 304. 1917, P. P., excl. Pl. Korea et Japan; Merr. et Chun in Sunyats. 273. 1934; Kanehira, Formos. Trees, rev. ed.: 146. 1936; Li, Woody Fl. Taiwan: 113. 1963; 湖北植物志 1: 144. f. 181. 1976; 云南种子植物名录, 上册: 699. 1984; 湖北植物大全: 266. 1992; 浙江植物志, 2: 85, f. 2-110. 1992. —— B. kazinoki auct. non Sieb.: Gagnep. in Lecomte, Fl. Gen. Indo-Chine 5: 718, f. 87-14-18. 1929; Liu, Ill. Lign. Pl. Taiwan 2: 707, f. 561. 1962; 海南植物志 2: 378, f. 485. 1965; 中国高等植物图鉴 1: 481, f. 961. 1972. p. p., 台湾植物志 2: 120, pl. 234, except the palmatisect leaf. 1976.
蔓生藤状灌木；树皮黑褐色；小枝显著伸长，幼时被浅褐色柔毛，成长脱落。叶互生，螺旋状排列，近对称的卵状椭圆形，长3.5-8厘米，宽2-3厘米，先端渐尖至尾尖，基部心形或截形，边缘锯齿细，齿尖具腺体，不裂，稀为2-3裂，表面无毛，稍粗糙；叶柄长8-10毫米，被毛。花雌雄异株，雄花序短穗状，长1.5-2.5厘米，花序轴约1厘米；雄花花被片4-3，裂片外面被毛，雄蕊4-3，花药黄色，椭圆球形，退化雌蕊小；雌花集生为球形头状花序。聚花果直径1厘米，花柱线形，延长。花期4-6月，果期5-7月。
产浙江（龙泉至各地）、湖北、湖南、安徽、江西、福建、广东、广西、云南、四川、贵州、台湾等省区。多生于海拔308-1000米，山谷灌丛中或沟边山坡路旁。
韧皮纤维为造纸优良原料。
《Flora of China》 Vol. 5 (2003)
Broussonetia kaempferi Siebold var. australis Suzuki
藤构 teng gou
Broussonetia sieboldii Blume.
Shrubs, scandent, flowers always produced on leafy stems; dioecious. Bark blackish brown. Branchlets conspicuously spreading, pale gray pubescent when young, glabrescent. Leaves spirally arranged; petiole 0.8-1 cm, pubescent; leaf blade ± ovate-elliptic, simple or occasionally 2- or 3-lobed, 3.5-8 × 2-3 cm, scabrous and glabrous, base cordate to cuneate, margin finely serrate with glandular serrations at apex, apex attenuate to shortly acuminate. Male inflorescences spicate, 1.5-2.5 cm. Female inflorescences globose. Male flowers: calyx 3- or 4-lobed, adaxially pubescent; anthers yellow, elliptic-globose. Female flowers: style linear, exserted. Syncarp ca. 1 cm in diam., with stellate clusters of stout strongly barbed hairs. Fl. Apr-Jun, fr. May-Jul.
* Scrub, along trails on slopes; 300-1000 m. Anhui, Chongqing, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Taiwan, SE Yunnan, Zhejiang.
Broussonetia kaempferi var. kaempferi is endemic to Japan.
The bark fibers are used for making paper.
