318 MTRTACE^. (myrtle FAMILY.) 



I>. rotundifolia, L. Round-leaved Sundew. 2f Leaves orhie- 

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

 banks ; Bikfaya ; 'Ain-es-Sawa'ir. Meiruba. 



Order. XL. HALORAOE^, (Water Milfoil Family). 



Aquatic herbs, with Qnimote^ axillary, sessile, herma- 

 jphrodite or raonmciou^s flowers, calyx-tube adherent to ovary, 

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

 stigmas as many as cells of ovary — Calyx-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, l-4rcelled, separating into pyrenes. 

 Seeds albuminous. 



1. MYRIOPHYI.L.IJ1WI, L. Water Milfoil. 



Flowers moncEcious. 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 pinnatij)artite leaves, the staminate flowers 

 above the pistillate. 



Id, spicatum, L. If Leaves pinnatipartite into setaceous lobes. 

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

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

 Orontes Yalley, and northward. 



2. CALLiITRICHE, 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 3 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, Kutz. 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. IdYRTACEiE, (Myrtle Family). 



Trees or shrubs, with regular, hermojphrodite flowers, 

 calyx-tube adherent to ovary ; limb cleft into imbricated 

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

 stamens {in ours) oo,free, inserted on throat; ovary several- 

 celled, with central ])lacentoe> / style and stigma 1 / ovules 

 numerous / fruit {in ours) a berry, with exalbuminous seeds. 



