大苞耳草Hedyotis bracteosa Hance
大苞耳草Hedyotis bracteosa Hance
35. 大苞耳草（中国高等植物图鉴）图版9: 1-4
Hedyotis bracteosa Hance in Journ. Bot. 23: 323. 1885; Hemsl. in Journ. Linn. Soc. Bot. 23: 373. 1888; Dunn et Tutch. in Kew Bull. Misc. Inf. Add. Ser. 10: 128. 1912.——denlandia bracteosa (Hance) Kuntze, Rev. Gen. Pl. 1: 292. 1891.
直立粗壮无毛草本，高50厘米，具粗壮发达的纤维状根；茎方柱形，具不明显的4翅，节间距离约1厘米。叶对生，在上部的近轮生，无柄或近无柄，纸质，长圆形或长圆状披针形，长12-15厘米，宽2-4厘米，顶端短尖或短渐尖，钝头，基部狭或下延；中脉在上面凹入，侧脉每边7条，柔弱，在两面稍明显，与中脉成锐角向上伸出；托叶阔三角形，长达1厘米，基部宽7毫米，边缘外卷，有黑色腺体。花序头状，直径约1.6厘米，基部有4枚苞片承托，腋生，很少顶生，具长达4-15厘米的总花梗，通常单枝；苞片4枚，阔卵形，长1.5-2.5厘米，宽1-1.8厘米，无毛；花4数，无梗，密集；萼管长圆形，长约2毫米，萼檐裂片卵形或卵状披针形，长约3毫米，宽1.8-2毫米，短尖，具脉纹，有时被微细缘毛；花冠白色，长约5毫米，外面无毛，花冠裂片披针形，与冠管等长，顶端短尖，外反；花柱突出，被粉末状绒毛，柱头头状，浅2裂。蒴果近球形，灰色，略短于宿存萼檐裂片，成熟时开裂为2果爿，果爿腹部直裂；种子多粒，具棱，干后黑色，具皱纹。花期4-7月。
产于广东、香港（乌蛟田）；生于山坡疏林下或沟谷两旁湿润土地。模式标本采自广东罗浮山。
本种头状花序大型，并有4片叶状苞片承托，极易与我国同属其他种类相区别。
《Flora of China》 Vol. 19 (2011)
Hedyotis bracteosa Hance J. Bot. 23: 323. 1885.
大苞耳草 da bao er cao
Oldenlandia bracteosa (Hance) Kuntze.
Herbs, erect, to 50 cm tall; stems glabrous, 4-angled with angles rounded to acute or winged, wings to 1 mm wide. Leaves sessile or subsessile; blade drying papery, elliptic-oblong or oblong-lanceolate, 12-15 × 2-4 cm, glabrous, base obtuse to cordulate then abruptly narrowed, apex acute or shortly acuminate; secondary veins ca. 7 pairs, weakly marked or not visible; stipules fused to petiole bases, broadly triangular to ovate, 4-12 mm, glabrous, with 2 winged flanges 1-2.5 mm wide extending from each petiole base to apex, entire or glandular-serrulate, acute to acuminate. Inflorescence axillary, capitate, glabrous, pedunculate; peduncles 2.5-7 cm; involucral bracts 2 or 4, ovate, 10-25 × 9-18 mm; head hemispherical, 10-16 mm in diam.; floral bracts narrowly lanceolate, 1-4 mm; pedicels 0.2-1 mm. Flowers subsessile to shortly pedicellate, distylous. Calyx glabrous; hypanthium portion ellipsoid, ca. 1 mm; limb lobed nearly to base; lobes ovate or lanceolate, 2.2-3 × 1.2-2 mm, often pinnately veined, sometimes ciliolate, obtuse to acute. Corolla white, tubular or tubular-funnelform, outside glabrous; tube ca. 4 mm, pilosulous inside in upper half and throat; lobes lanceolate to triangular, ca. 1.5 mm, acute. Anthers exserted and ca. 0.8 mm in short-styled form, in long-styled form not seen. Stigmas ca. 0.5 mm and positioned near middle of corolla tube in short-styled form, ca. 1 mm and exserted in long-styled form. Fruit capsular, subglobose to ellipsoid, ca. 2 mm, glabrous, septicidal then perhaps rather tardily loculicidal, with calyx limb persistent; seeds numerous, black, angled, rugose. Fl. Apr-Jul, fr. Jul.
● Sparse forests on mountain slopes or on humid lands in valleys/ravines. Guangdong.
W. C. Ko (in FRPS 71(1): 56. 1999) described the corolla as having lobes as long as the corolla tube, but this has not been seen on specimens studied nor reported by other authors.W. C. Ko (in FRPS 71(1): 56. 1999) described the corolla as having lobes as long as the corolla tube, but this has not been seen on specimens studied nor reported by other authors.
科名：茜草科 Rubiaceae
属名：耳草属 Hedyotis
35. 大苞耳草（中国高等植物图鉴）图版9: 1-4
Hedyotis bracteosa Hance in Journ. Bot. 23: 323. 1885; Hemsl. in Journ. Linn. Soc. Bot. 23: 373. 1888; Dunn et Tutch. in Kew Bull. Misc. Inf. Add. Ser. 10: 128. 1912.——denlandia bracteosa (Hance) Kuntze, Rev. Gen. Pl. 1: 292. 1891.
直立粗壮无毛草本，高50厘米，具粗壮发达的纤维状根；茎方柱形，具不明显的4翅，节间距离约1厘米。叶对生，在上部的近轮生，无柄或近无柄，纸质，长圆形或长圆状披针形，长12-15厘米，宽2-4厘米，顶端短尖或短渐尖，钝头，基部狭或下延；中脉在上面凹入，侧脉每边7条，柔弱，在两面稍明显，与中脉成锐角向上伸出；托叶阔三角形，长达1厘米，基部宽7毫米，边缘外卷，有黑色腺体。花序头状，直径约1.6厘米，基部有4枚苞片承托，腋生，很少顶生，具长达4-15厘米的总花梗，通常单枝；苞片4枚，阔卵形，长1.5-2.5厘米，宽1-1.8厘米，无毛；花4数，无梗，密集；萼管长圆形，长约2毫米，萼檐裂片卵形或卵状披针形，长约3毫米，宽1.8-2毫米，短尖，具脉纹，有时被微细缘毛；花冠白色，长约5毫米，外面无毛，花冠裂片披针形，与冠管等长，顶端短尖，外反；花柱突出，被粉末状绒毛，柱头头状，浅2裂。蒴果近球形，灰色，略短于宿存萼檐裂片，成熟时开裂为2果爿，果爿腹部直裂；种子多粒，具棱，干后黑色，具皱纹。花期4-7月。
产于广东、香港（乌蛟田）；生于山坡疏林下或沟谷两旁湿润土地。模式标本采自广东罗浮山。
本种头状花序大型，并有4片叶状苞片承托，极易与我国同属其他种类相区别。
《Flora of China》 Vol. 19 (2011)
Hedyotis bracteosa Hance J. Bot. 23: 323. 1885.
大苞耳草 da bao er cao
Oldenlandia bracteosa (Hance) Kuntze.
Herbs, erect, to 50 cm tall; stems glabrous, 4-angled with angles rounded to acute or winged, wings to 1 mm wide. Leaves sessile or subsessile; blade drying papery, elliptic-oblong or oblong-lanceolate, 12-15 × 2-4 cm, glabrous, base obtuse to cordulate then abruptly narrowed, apex acute or shortly acuminate; secondary veins ca. 7 pairs, weakly marked or not visible; stipules fused to petiole bases, broadly triangular to ovate, 4-12 mm, glabrous, with 2 winged flanges 1-2.5 mm wide extending from each petiole base to apex, entire or glandular-serrulate, acute to acuminate. Inflorescence axillary, capitate, glabrous, pedunculate; peduncles 2.5-7 cm; involucral bracts 2 or 4, ovate, 10-25 × 9-18 mm; head hemispherical, 10-16 mm in diam.; floral bracts narrowly lanceolate, 1-4 mm; pedicels 0.2-1 mm. Flowers subsessile to shortly pedicellate, distylous. Calyx glabrous; hypanthium portion ellipsoid, ca. 1 mm; limb lobed nearly to base; lobes ovate or lanceolate, 2.2-3 × 1.2-2 mm, often pinnately veined, sometimes ciliolate, obtuse to acute. Corolla white, tubular or tubular-funnelform, outside glabrous; tube ca. 4 mm, pilosulous inside in upper half and throat; lobes lanceolate to triangular, ca. 1.5 mm, acute. Anthers exserted and ca. 0.8 mm in short-styled form, in long-styled form not seen. Stigmas ca. 0.5 mm and positioned near middle of corolla tube in short-styled form, ca. 1 mm and exserted in long-styled form. Fruit capsular, subglobose to ellipsoid, ca. 2 mm, glabrous, septicidal then perhaps rather tardily loculicidal, with calyx limb persistent; seeds numerous, black, angled, rugose. Fl. Apr-Jul, fr. Jul.
● Sparse forests on mountain slopes or on humid lands in valleys/ravines. Guangdong.
W. C. Ko (in FRPS 71(1): 56. 1999) described the corolla as having lobes as long as the corolla tube, but this has not been seen on specimens studied nor reported by other authors.W. C. Ko (in FRPS 71(1): 56. 1999) described the corolla as having lobes as long as the corolla tube, but this has not been seen on specimens studied nor reported by other authors.