328 CRASSULACEE (Harv.) [Helophytum. 
ing dry places in the warmer temperate zone of the eastern hemisphere ; much 
rarer in America ; very abundant in S. Africa. Some of the smaller and less suc- 
culent ies are found in marshes and on damp ground, and even floating on 
= onds and in rivulets. 1n affinity these plants seem nearly allied to Saxifragacee. 
any are cultivated for ornamental purposes. 
TABLE OF THE SOUTH AFRICAN GENERA. 
Tribe 1. IsosteMoNES. Stamens as many as the petals, 
* Sepals and petals 4. 
~* ]. Helophytum.—Ovules solitary in each carpel. 
© IL. Bulliarda.—Ovules several in each carpel. 
** Sepals and petals 5, or rarely 6-9. 
'~ | JIT. Dinacria.—Calyx 5-fid, campanulate. Petals clawed, connate at base. Car- 
pels with a hornlike crest at the back of each style. 
Pt iy. Grammanthes.—Caly« 5-fid, campanulate, Corolla salver-shaped, with a short 
in nq .. tube. 
’” 5) V, Crassula.—Calyx s—parted, stellate or erect. Petals free or connate at base, 
lanceolate or panduriform, sometimes mucronate, or gland-tipped. 
VI. Rochea.— Calyx 5-parted or cleft. Corolla salver-shaped, its tube longer than 
the calyx. Anthers subsessile in the*throat of the corolla. PL on Ue : wth fre ‘ 
Tribe 2. DrPLosTEMONES. Stamens twice as many as the petals. 
» VII. Cotyledon.—Calyx 5—parted. Corolla 5—lobed. 
» VIII. Kalanchoe.—Calyx 4—parted, sepals lanceolate. Corolla 4—lobed. 
IX. Bryophyllum.—Calyzx inflated, shortly 4-lobed. Corolla 4—lobed. 
I. HELOPHYTUM, E. &. Z. 
Calyx 4-cleft or 4-toothed. Petals 4, roundish or obovate, spreading. 
Stamens 4, shorter than the petals. Squamee cuneate, truncate. Carpels 
4; ovules solitary; style short. ollicles one-seeded. £. § Z. Enum. 
p. 288. 
Water or marsh plants, with weak, filiform, erect or floating, simple or slightly 
branched stems. Leaves opposite, subdistant, linear or spathulate or subrotund. 
Flowers axillary, pedicellate, either solitary or in cymules ; small, white. Name 
from éAos, a marsh, and vtor, a plant. 
TABLE OF THE SPECIES. 
____ Stem filiform, slender ; flowers solitary, icelled, axillary. (1) natans. 
__ Stem swollen, hollow ; flowers in sbeebs attibe? cymules. (2) inane, 
= he natans E. & Z.! 1843); glabrous ; stem filiform, weak, sub- 
simple (mostly floating); lower internodes distant, with linear or 
spathulate, obtuse or subacute, flat leaves; upper approximate, with 
spathulate or obovate or subrotund leaves ; peduncles axillary, one- 
flowered, setaceous ; calyx 4-toothed, half as long as the subrotund or 
obovate, spreading petals ; stamens shorter than the petals. Crassula 
— Th. Cap, p. 281. Tilleea capensis, Linn. f. sup. 129. 
‘AR. a. finitans; stems long and floating ; lower leaves linear-el far 
a spathulate. Hel. Auitans, EGS! 1844, ex pte oH. cae 1843, bed 
Os - filiforme, E. § Z.! 1844, Drege, 6876. Crassula natans, E. Mey. / in Heb. 
Var. B. obovata; lower leaves  spathulate, u bovate. i 
— vatum, B. § 2.1 Drege, 6877, 6878. ° ee fs) . H. fluitans, var. obo- 
War. y. amphibia; in marshy places, inundated terrestrial ; stems 
: ona ; leaves equalling or exceeding the iateiisdel,- ihe medial and seller iin 
