APPENDIX 



209 



ORDER GRAMINACE^; 



Milium vernale, Bieb. Differs from M. effusum, 

 L. , as follows : Panicle close. Palea blunt. Stem 

 rough. Leaves short, linear-lanceolate. 1-4 in. 

 April. Herbaceous annual. Guernsey. 



Kceleria vallesiana, Asch. & Grsebn. Erect 

 Rootstock covered with dense mat of persistent 

 fibres of leaf -sheaths. Leaves short, turned 

 back, turned over at margins, stiff, bluish-white. 

 6-15 in. June. Herbaceous perennial. 



LAKES, RIVERS, ETC. 



ORDER RANUNCULACEJS 



Water Buttercup (Ranunculus peltatus, 

 Schrank). Floating leaves divided half-way into 

 3 wedge-shaped segments. Submerged leaves 

 thread-like, generally stiff. Flowers large. May- 

 September. Herbaceous perennial. 



ORDER GERANIACE^E 



Orange Er.!oam (Impatiens biflora, Walt. = 7. 

 futva, Nutt.). Differs from /. Noli-me-tangere, L., 

 as follows : Leaves acute. Flowers orange. Pos- 

 terior sepal suddenly contracted into a turned- 

 back, notched spur. 1-3 ft. July-October. Her- 

 baceous annual. American, naturalized. 



ORDER UMBELLIFER/E 



River Water Dropwort (CEnanthe fluviatilis, 

 Colem.). Floating. Segments of submerged 

 leaves parallel. Fruit as long as styles. [In 

 CE. Phellandrium, Lamk., a plant of still waters, 

 leaf-segments are spreading and fruit twice as 

 long as styles.] July-September. Herbaceous 

 perennial. 



ORDER SCROPHULARIACE^E 



Musk (Mimulus moschatus, Dougl.). Ascend- 

 ing. Glandular, hairy, musk-scented. Leaves 

 elliptical, small. Flowers narrow, yellow. 6-i8in. 

 July. Herbaceous perennial. Naturalized. 



Water Speedwell ( Veronica Anagallis-aquatica, 

 L.). Inflorescence long, dense-flowered. Flower- 

 stalks ascending. Flowers generally pale-blue. 

 Fruit ovate-obcordate, narrow below, with narrow 

 notch at lip. 1-2 ft. July. Herbaceous perennial. 



Veronica aquatica, Bernh. Differs from last as 

 follows: Inflorescence loose. Flower-stalks hori- 

 zontal. Flowers white or pale-pink. Fruit broad, 

 not narrowed below, deeply notched. 



ORDER LABIATE 



Mentha pubescens, Willd. Differs from M. 

 aquatica, L., as follow: Leaves dull-green and 

 hairy above, densely woolly below. Flowers 

 in a dense, cylindrical spike, interrupted below. 

 Calyx-teeth two-thirds the length of the tube, awl- 

 shaped. August-October. Herbaceous perennial. 

 Probably a hybrid. 



Marsh Woundwort (Stachys pahistris, L.). 

 Differs from S. sylvatica, L., as follows: Stem 

 shorter, hollow. Leaves much narrower, with 

 VOL. vi. 



short (or no) stalks. Hairs less coarse. Odour 

 less disagreeable. Flowers paler. A hybrid with 

 S. sylvatica, L. (5. ambigua, Sm.) occurs. 



ORDER POLYGONACE^ 



Tear -Thumb (Polygonum sagittatum, L.). 

 Stem rough, with turned-back prickles. Leaves 

 oblong-ovate to arrow-shaped. Flowers white. 

 6 in.-2 ft. July -October. Herbaceous annual. 

 North American, naturalized in County Kerry. 



ORDER ALISMACEJE 



Canadian Arrowhead (Sagittaria heterophylla, 

 Pursh). Leaves ovate - lanceolate. Flowers 

 white, without purple markings. 6 in. -2 ft. June. 

 Herbaceous perennial. Canadian. River Exe 

 (W. P. Hiern). 



ORDER NAIADACE^; 



Loddon Pondweed (Potamogeton Drucei, Fryer). 

 Floating leaves 4-6 in., leathery, blade gradu- 

 ally merging into the stalk, elliptic-lanceolate, 

 with net-like veins. Submerged leaves long, clear- 

 green. Fruit broadly obovate ; keel acute, tuber- 

 cled in acute angles below. June. Herbaceous 

 perennial. River Loddon. 



Potamogeton varians, Fryer ( = P. spathiformis, 

 Tuck.). Leaves inversely ovate, lower spoon- 

 shaped, mostly sessile. June -August. Her- 

 baceous perennial. Streams. Very rare. 



WASTE PLACES, ETC. 



ORDER PAPAVERACE^: 



Opium Poppy (Papaver somnifentm, L.). 

 Distinguished from other native poppies by the 

 glaucous stem-clasping leaves and the large white 

 or dull-purple flowers. 1-3 ft. July. Herbaceous 

 annual. 



Scarlet Horned Poppy (Glaucium corniculatum, 

 Curt. = G. phoeniceum, Crantz). Smaller than G. 

 luteum, L. Flowers scarlet or wine-red, with a 

 black spot below. Capsule hairy. July. Her- 

 baceous biennial. 



ORDER FUMARIACE/E 



Fumitory (Fumaria capreolata, L.). Climbing 

 by twisted petioles. Leaves 2-pinnate; segments 

 broad, flat. Sepals half as long as corolla. Lower 

 petal gradually dilated at tip. Fruit square, blunt, 

 with a distinct neck. Fruit-stalks turned back. 

 1-3 ft. May-September. Herbaceous annual. 



Fumaria purpurea, Pugsley. Differs from last 

 as follows: Sepals two-thirds as long as corolla. 

 Corolla purplish, tipped with dark-purple. Flower- 

 stalks spreading at first. Fruit smaller, slightly 

 wrinkled when dry. 



Fumaria occidentalis, Pugsley. Robust, climb- 

 ing. Flowers large, rose with dark-purple tips. 

 Upper petals broadly winged. Fruit-stalks erect 

 or curving downwards. Fruit large, roundish, 

 tubercled, wrinkled when dry. June-October. 

 Herbaceous annual. Cornwall. 



91 



