Download narrowly triangular, entire or sometimes minutely scabrous. Corolla

164
FLORA OF TAIWAN
narrowly triangular, entire or sometimes minutely scabrous. Corolla tubularcampanulate, funnelform or salverform, widened upwards, 5- (rarely 4-) lobed,
the lobes contorted or imbricate in bud, ovate or triangular, the sinuses plicate,
produced with 5 (rarely 4) appendages between the lobes or none adherent to
the ripened capsule. Stamens as many as and alternate with corolla-lobes, inserted
below or on middle of corolla-tube, usually included or rarely exserted beyond
the corolla, the anthers versatile, straight or recurved after anthesis, the filaments
filiform, the base dilated. Ovary ellipsoid to cylindric, 1-locular, stipitate; ovules
numerous; style short, persistent, or none; stigma bifurcate, the ends somewhat
revolute. Capsules sessile or stipitate, included or exserted beyond the persistent
corolla, 2-valved, dehiscent; seeds small, numerous, winged or not.
About 500 species of wide distribution in the subfrigid or temperate zones,
and high mountains in the Tropics; 12 taxa in Taiwan.
KEY TO THE SPECIES AND VARIETIES
1. Leaves without white or cartilaginous margins, sessile; flowers solitary or 2-4-fasciculate
at the end of the branches, 5- (sometimes 4-) merous; capsules long-stipitate
.....
...................................................................................... 3. G. atkinsonii formosana
1. Leaves with cartilaginous or white margins, sessile or short petiolate; flowers solitary
at the end of branches, 5-merous; capsules with short or long stipes.
2. Stems prostrate: leaves with thin white margins, short-petiolate; style filiform, long;
capsules included in the persistent corolla, short-stipitate
……… 7. G. parvifolia
2. Stems erect or ascending; leaves with cartilaginous margins, sessile; style short or
none; capsules often exserted beyond the persistent corolla, long-stipitate.
3. Leaves flat, loosely arranged on stem; corolla-lobes acute or acuminate, sometimes
minutely aristate at tip.
4. Calyx-lobes broad, ovate to lanceolate or spatulate, the margins minutely
scabrous.
5. Stems unbranched; leaves very thick, the apex obtuse; ovary sessile ............
............................................................................... 10. G. tentyoensis
5. Stems often branched; leaves not as above; ovary stalked.
6. Anthers narrow, linear, 1-3 mm long.
7. Calyx-lobes equal in length, shorter than calyx-tube, ovate-lanceolate,
elliptic-ovate or spatulate.
8. Medium-sized plants,10-20 cm tall; flowers rather larger, 2025 mm long, yellow or yellowish; corolla-appendages obtuse at
apex, obscurely undulate-dentate or entire...................................
........................................................ 8a. G. scabrida scabrida
8. Very minute plants, less than 3 cm tall; flowers small, less than
10 mm long, whitish; corolla-appendages cuspidate-acute at apex,
entire............................................ 8b. G. scabrida horaimontana
7. Calyx-lobes unequal in length, as long as calyx-tube, narrowly
lanceolate ......................................................l.G. angusta
6. Anthers broad, oblong, 0.3 mm long ............................ 11. G. tenuissima
4. Calyx-lobes narrow, linear.
5. Corolla-appendages lobed or bidentate at apex; calyx-lobes linear, longer
than the calyx-tube.
6. Plants medium-sized, 15-20 cm tall; flowers larger, 18-20 mm long;
corolla-lobes broadly ovate, the appendages 2-3-dentate or -lobed,
irregularly serrulate at tip ......................................... 5. G. itzershanensis
6. Plants very small, 2-4 cm tall; flowers smaller, less than 15 mm long;
corolla-lobes lanceolate, the appendages bidentate or entire
........
............................................................................... 6. G. loureirii