. Flowers of the field. Botany. i6. Barbarea (Winter Cress).—Poi linear, 4-angled ; valves with prominent nerve ; seeds in a single row ; calyx erect. (Name from St. Barbara, to whom it was anciently dedicated.) 17. Nasturtium (Cress).—Poi nearly cylindrical, short ; valves convex, nerveless ; seeds irregularly placed in two rows ; calyx spreading. (Name from nasiis tortus, a distorted nose, on account of the pungent properties of the plant.) 18. Sisymbrium (Hedge Mustard).—Pof? rounded or angular ; valves convex, with 3 (or rarely i) nerves ; stigma entire ; seeds in a single ro
. Flowers of the field. Botany. i6. Barbarea (Winter Cress).—Poi linear, 4-angled ; valves with prominent nerve ; seeds in a single row ; calyx erect. (Name from St. Barbara, to whom it was anciently dedicated.) 17. Nasturtium (Cress).—Poi nearly cylindrical, short ; valves convex, nerveless ; seeds irregularly placed in two rows ; calyx spreading. (Name from nasiis tortus, a distorted nose, on account of the pungent properties of the plant.) 18. Sisymbrium (Hedge Mustard).—Pof? rounded or angular ; valves convex, with 3 (or rarely i) nerves ; stigma entire ; seeds in a single row ; seed-stalks .slender. (Name, the Greek name of the plant.) 19. (Garlic IMustard).—Pod long, linear, rounded; valves .slightly 3-nerved ; seeds striated ; seed-stalks flat. (Name from the Latm, allium, garlic.) 20. ErysiiMUJI (Treacle Mustard).—Pod 4-sided ; valves keeled ; stigma obtuse, entire or notched ; seeds iii a single row, smooth, not margined. (Name from the Greek, eriio, to cure, on account of the supposed virtues of the plant.) 21. Cheiranthus (Wall-flower).—Pod flattened; valves with a prominent nerve ; stigma of two spreading lobes. (Name of Arabic origin.) 22. Matthiola (Stock).—Pod nearly cylindrical, or flattened ; stigma of two erect parallel lobes ; seeds generally with a mem branous border, botanist.). (Named in honour of Dr. Matthiohis, an Italian 23. Brassica (Cabbage).—Pod nearly cylin- drical, beaked ; seeds gloliose. (Name from the Celtic, hresic a cabbage.) Pod wit/ioiit valves 24, (Radish), bperfectly jointed, taperi spreading. (Name in Gi(,;;ek, pearance or quick growth.) —Pods swollen, im- secds globular ; calvx denoting early ap- Arvense {Penny Cress) 1. Thlaspi {Penny Cress) I. T. arvense (Mithridate Mustard, or Penny Cress).—Pouch round, flat, with very broad wings and a deep notch ; leaves oblong, arrow-shaped at the base, toothed, smooth. Height about a foot. In cultivated or waste ground, but
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1908
