(23) 紫花短筒苣苔 (佳氏苣苔)
Boeica guileana B. L. Burtt
苦苣苔科 (Gesneriaceae)

英文名 (English name): Guile's Boeica

中國境內現狀：瀕危 (EN)
Status in China: Endangered (EN)

形態特徵：多年生草本。葉全部基生；葉片橢圓形，長2-3 厘米，寬1.1-1.9厘米，先端圓形，基部楔形，邊緣具細齒，兩面被白色柔毛；葉柄長可達3厘米。花序梗從葉叢中抽出，長5.5厘米，通常頂生1花；花梗長1.2-1.3厘米，與花序梗同被紫褐色長柔毛。花萼5裂至近基部。花冠藍紫色，長1.2厘米，被白色短柔毛，二唇形，上唇2裂，下唇3裂，裂片近相等。雄蕊4，離生；雌蕊長約1厘米，密被長柔毛。蒴果長圓形，長約1.4厘米，被長柔毛。

地理分布：香港特有種，分布於馬鞍山、八仙嶺、南涌、鹿頸。

生態與生境：生於石上。

香港的稀有種，模式標本採自香港，具科學研究價值；花美麗，具觀賞價值。分布範圍狹窄，個體稀少，其生長地點在郊野公園內，受到保護。可嘗試採種育苗及作遷地保護。

Description: Perennial herbs. Leaves basal; petiole up to 3 cm; leaf blade elliptic, 2-3 cm long and 1.1-1.9 cm wide, apex rounded, base cuneate, margin serrulate, white pilose on both surfaces. Peduncle ca. 5.5 cm, arising from the leaf rosette, usually 1-flowered; pedicels ca. 1.3 cm, as is the peduncle purple-brown pilose. Calyx 5-parted almost to base. Corolla blue-purple, ca. 1.2 cm long, white pubescent, 2-lipped, upper lip 2-lobed, lower lip 3-lobed; lobes subequal. Stamens 4, distinct; pistillate ca. 1 cm, densely pilose. Capsules oblong, ca. 1.4 cm, pilose.

Distribution: Endemic to Hong Kong; restricted to Ma On Shan, Pat Sin Leng, Nam Chung, Luk Keng.

Habitat and Ecology: On rocks.

As a rare species endemic to Hong Kong, it is of special botanical interest. The beautiful purple flower makes it a very attractive ornamental. Its distribution range is restricted and population size is small, but the localities of its occurrence are mostly in Country Parks under protection. Ex-situ conservation measures could be explored.

參考文獻 (References):
Burtt,B.L., 1977: Studies in the Gesneriaceae of the Old World XLI: Notes on Boeica and Didissandra. Not. Roy. Bot. Gard. Edinb. 35: 371-372.
王文采，1990: 中國植物誌69：256-257。科學出版社，北京。