150 DROSERACEJS. [DROSERA. 



often lax ; embryo axile, straight. DISTRIB. Sandy or marshy places ; 

 most common in temp. Australia ; genera 6 ; species 110. AFFINITIES. 

 Close to Saxifragece. PROPERTIES. Yield a deep red-purple dye. For 

 their carnivorous properties, see Darwin On Insectivorous Plants. 



1. DROS'ERA, L. SUNDEW. 



Slender glandular herbs. Leaves alternate or rosulate ; stipules scarious, 

 adnate to the petiole, or 0. Flowers in scorpioid revolute cymes, rarely 

 solitary. Sepals and petals 4-6 or 8. Stamens as many, hypogynous or 

 perigynous. Ovary free, ovoid or globose, 1-celled ; styles 2-5, distinct 

 or connate below ; ovules in many series, on 2-5 parietal placentas. 

 Capsule oblong, 2-5-valved. Seeds minute, testa usually lax; embryo 

 large or small. DISTRIB. Of the Order ; species 100. ETYM. Spocrtpos, 

 from the dew-like glands. 



1. D. rotundifo'lia, L. ; leaves horizontal orbicular or broadly obovate, 

 petiole hairy, testa loose reticulate. 



Spongy bogs and heaths, N. to Shetland ; ascends to 2,300 ft. in the Highlands ; 

 Ireland ; Channel Islands ; fl. July Aug. Rootstock slender. Stem very 

 short. Leaves -| in. diam., rosulate, margin glandular, nearly glabrous 

 above ; petiole 1-1| in., gradually dilated at the sheathing base. Scapes 3- 

 6 in., in the centre of the rosette ; bracts subulate ; pedicels short. 

 Flowers in. diam., many, in 2 series, white, usually 6-merous, homo- 

 gamous. Petals a little longer than the sepals. Styles 2-fid, incurved, 

 segments clavate. Capsule acute, exceeding the sepals. Seeds elongate. 

 DISTRIB. Europe (Arctic), N. and W. Asia, N. America. 



2. D. interme'dia, Hayne ; leaves erect obovate or oblong- spathulate, 

 petiole glabrous, testa close granulate. D. longifo'lia, L. in part. 



Bogs and moist heaths, from Caithness to Sussex and Cornwall ; local in 

 Scotland ; Ireland ; fl. July- Aug. Stem short, leafy. Leaves gradually con- 

 tracted into the petiole, together 1-2 in. Scapes 2-4 in., from the base of 

 the rosette, curved at the base. Flowers much as in D. rotundifo'lia, 

 usually 5-8-merous. Capsule pyriform, equalling the sepals. Seeds ovoid. 

 DISTRIB. Europe (Arctic), "W. Asia, America from Canada to Brazil. 



3. D. anglica* Huds. ; leaves suberect linear- spathulate, petiole 

 glabrous, testa loosely reticulate. D. longifolia, L. in part. 



Wet moors, from Orkney to Devon, Dorset, and Suffolk ; ascends to 1,700 ft. 

 in the Highlands ; rare in S. England ; Ireland ; fl. July-Aug. Very 

 similar to D. interme'dia, but larger. Leaves $ in. broad ; petiole 2-4 in. 

 Scapes 4-8 in., from the centre of the rosette. Flowers in. diam., 5-8- 

 merous.. Capsule obovoid, longer than the sepals. DISTRIB. Europe, N. 

 Asia, America. D. obova'ta, Mert. and Koch, with broader leaves, styles 

 often notched, capsule half as long as the sepals, seeds imperfect, is 

 probably a hybrid with D. rotundifo'lia. Scotch moors. 



