318 MYRTACE^. (myrtle FAMILY.) 



I>. rotuudifolia, L. Round-leaved Sundew. If Leaves orbic- 

 ular, abruptly narrowed into broad petioles. Flowers white — Mossy 

 banks ; Bikfaya ; 'Ain-es-Sawa'tr. Meirtiba. , 



Order. XL. HALORAOE^, (Water Milfoil Fa.mily). 



Aquatic herhs, with minute, axillary^ sessile, herma- 

 phrodite or monoecious flowers, calyx-tube adherent to ovary, 

 jpetals inserted on the throat of calyx, cells of ovary 1-ovuled, 

 stigmas as rnany as cells of ovary — Caljx-limb truncate, or 

 2-4 parted. Petals as many as calyx-lobes. Stamens 1-8. Ovary 

 l-4:-celled ; ovules anatropous, pendulous. Fruit nut-like or 

 drupaceous, indehiscent, 1-4-celled, separating into pyrenes. 

 Seeds albuminous. 



Flowers monoecious. Staminate: — Calyx-tube rounded, limb 4- 

 parted, caducous. Petals 4, caducous. Stamens 8. Pistillate :— Calyx- 

 tube tetragonal, limb small. Petals minute, rudimentary, deflexed. 

 Stigmas 4, villous, persistent. Ovary 4- celled. Drupe drying, and 

 separating into 4 pyrenes — Aquatic herbs, with verticillate, opposite, 

 or alternate, dentate or pinnatipartite leaves, the staminate flowers 

 above the pistillate. 



]fl. §pieatu]ii, L. 11 Leaves pinnatipartite into setaceous lobes. 

 Whorls of flowers arranged in terminal spikes, naked at apex ; floral 

 leaves as long as flowers — Summer — Jordan Valley, Coelesyria and 

 Orontes Valley, and northward. 



2. CAL.L.ITRICHE, L. Water Starwort. 



Flowers monoecious, naked, or with 3, opposite, translucent, stalked 

 bractlets. Calyx-lobes 0. Corolla 0. Staminate : — Stamen 1, with elon- 

 gated, slender filament, anther 2-celled, dehiscent by a semi-circular 

 slit. Pistillate: — Styles 2, subulate. Ovary of 2 carpels, 4-celled by 

 means of false septa. Drupe dry, compressed, coriaceous, at length 

 separating into 4, indehiscent mericarps — Tender, aquatic herbs, with 

 opposite, decussate, entire leaves. 



C. vernalis, Ktitz. 11 Leaves of lower branches linear, of upper 

 linear-spathulate to obovate, .003 to .005 long. Styles erect, usually 

 fugacious ; fruit .001 long, longer than broad, mericarps somewhat 

 keeled — Spring and Summer — Stagnant water. 



Order XLI. MYRTACE^E, (Myrtle Family). 



Trees or shrubs, with regular, hermajphrodite flowers, 

 calyx-tube adherent to ovary / limb cleft into imhricated 

 lobes ; petals as many as calyx-lobes, inserted on throat ; the 

 sta^niens {in ours) Qfi,free, inserted on throat j ovary severalr\ 

 celled, with central placentm ; style and stigma 1 ; ovulesl 

 numerous ; fridt (in ours) a berry, with exalbuminous seedsi 



