Drosera.] XXVII. dboseeaceae. 147 



produced into glandular appendages. Flowers purple, 4-8 or more; pedicels 



slender. Sepals 5^ entire or minutely toothed at the apex. Petals 5, obovate 



or obcordate, fully twice as long as the sepals. Styles 3, divided from below the 



middle into many short dichotomoiis lobes. Capsule globose. Seeds numerous, 



linear; testa loose, produced into a short wing at each end. — Hook, f., Fl. N.Z. 



i. 21; Handbk. 64; Benth., Fl. Austr. ii. 465. D. peltata, Banks and Sol. 



MSS. 



Three Kings Islands southward to Banks Peninsula. Sea-level to nearly 1,800ft, Nov. to 

 Jan. Also in Australia. 



The only New Zealand species with purple flowers. The stem is sometimes nearly 5ft. iu 

 length, climbing by means of the glandular leaves and slender petioles, which are often IJin. long. 



D. circinervia, Col. in Tratis. N.Z.I, xxvi. (1893) 314, is a form occasionally met with, in which 

 the lower and middle peduncles become elongated, forming a lax few-flowered corymb, which gradu- 

 ally assumes a racemose character with the lengthening -of the axis. 



Oedee XXVIII.— haloeageae. 



Calyx-tube adnate with the ovary ; limb 2— 4-lobed or toothed or 0. Petals 

 as many as the sepals or 0, valvate, induplicate or slightly imbricate. Stamens 

 2—4, rarely 1—3, epigynous. Ovary inferior, 2—3- rarely 4-celled, with 1 ovule 

 in each cell, or 1-celled with 4 ovules ; ovules pendulous ; styles as many as 

 ovules or ; stigmas plumose or papillose, sometimes sessile. Fruit inferior, 

 small, indehiscent, with 1—4 cells, or separating into 2—4 indehiscent 1-seeded 

 carpels, or a small drupe. Seeds pendulous ; testa membranous ; endosperm 

 fleshy; embryo minute, cylindrical or ovoid; radicle superior. Herbs, often 

 aquatic or uliginal, with opposite alternate or whorled exstipulate leaves. 

 Flowers hermaphrodite or unisexual, usually axillary, rarely in terminal spikes, 

 racemes, or panicles. 



A small order, containing fewer than 100 species, arranged under 9 genera widely scattered 

 over the earth. The precise affinities of Gunnera and GalUtriche have not been clearly ascertained : 

 the latter especially must be considered a doubtful member of the order. 



1. Halobagis. Calyx 4-lobed. Petals induplicate. Pruit 4-8-angled. Terrestrial. 



2. MYEioPHYLLnM. Oalyx-lobes inconspicuous. Petals imbricate. Fruit separating into 2 



or 4 carpels. Aquatic. 



3. Gdnneea. Flowers in terminal spikes or panicles. Fruit a drupe. Uliginal or terrestrial. 



4. Callitriche. Perianth 0, Stamen 1. Styles 2. Fruit 4-Iobed. Uliginal or aquatic. 



1. HALORAGIS, Forst. 

 Calyx-tube 4-8-angled or winged ; lobes 4, rarely 3, short, erect. Petals 

 small, as many as calyx-lobes, deciduous, induplicate, usually in female 

 flowers. Stamens 4 or 8, on short filaments, usually in female flowers. 

 Ovary 2—4- rarely 5-celled, with 1 ovule in each cell; styles short; stigmas 

 simple or plumose. Fruit a small 2— 4-celled nut, sometimes drupaceous ; the 

 adherent calyx-tube 4— 8-ribbed or winged, smooth or muricate. Herbs or suf- 

 fruticose plants, with alternate or opposite entire toothed or lobed leaves and 

 minute hermaphrodite or unisexual racemose flowers. The fruits are sometimes 

 l-celled by absorption. 



