All Floras      Advanced Search
FOC Vol. 13 Page 428 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 13 | Haloragaceae

1. Gonocarpus Thunberg, Nov. Gen. Pl. 3: [55]. 1783.

小二仙草属 xiao er xian cao shu

Herbs terrestrial, prostrate or erect. Stem smooth or 4-ribbed, glabrous to sparsely pubescent. Leaves decussate or alternate, rarely in whorls of 3(-5), petiolate or sessile, simple, margin serrate or entire; venation pinnate. Inflorescence an indeterminate spike of solitary flowers borne in axils of alternate, opposite, or whorled primary bracts, with lateral spikes in axils of upper leaves. Flowers bisexual, (3 or)4-merous. Sepals deltoid, often with midrib and median basal callus, persistent in fruit. Petals hooded, keeled, usually shortly clawed, caducous. Stamens usually 2 × as many as sepals; filaments short; anthers oblong, 4-loculed, antisepalous anthers slightly longer than antipetalous ones. Ovary incompletely (3 or)4-loculed, with 1 pendulous ovule per locule (if 2, then 1 aborting early), (6-)8-ribbed, ornamented, mid-sepaline ribs less distinctly raised than others; styles as many as sepals; stigma capitate. Fruit small, nutlike, 1-loculed (septa almost absent); pericarp somewhat membranous. Seed 1, occupying entire fruit.

About 35 species: SW Asia, and primarily Australia and New Zealand; two species in China.

In FRPS (53(2): 140-143. 2000), Gonocarpus was included in Haloragis J. R. Forster & G. Forster. However, the present treatment follows Orchard (Bull. Auckland Inst. Mus. 10: 1-299. 1975), who recognized Gonocarpus based on differences of the inflorescence, septa, pericarp, and development of the fruit.

1 Herbs pubescent; leaf blade linear-lanceolate or oblong-lanceolate, 10-28 × 1-9 mm; flowers erect, yellow; fruit with 1 or 2 weak, oblique calluses between ribs.   1 G. chinensis
+ Herbs glabrous; leaf blade ovate or elliptic, 6-17 × 4-8 mm; flowers nodding at anthesis, red or rose; fruit often smooth.   2 G. micranthus

Lower Taxa


Related Objects  
  • Gonocarpus.pdf
  • PDF

    Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |