CRUCIFERAE (MUSTARD FAMILY) 



425 



Late-clasping ; broadly winged pod 1.2 cm. in diameter, deeply notched at 

 top ; style minute. — Waste places ; not common, except along our northern 

 borders, where too abundant and called " Frenchwekd." (Nat. from Eu.) 

 Fig. 741. 



2. T. PERFOLiATUM L. Lcttves sessile, the upper suhperfoUate ; pod 

 smaller (5 mm. broad). — Reported as occurring near Hamilton, Out. (Adv. 

 from Eu.) 



1. 



7. LEPIDIUM [Tourn.] L. Pepperwort. Peppergrass 



Pod roundish, much flattened contrary to the narrow partition ; valves boat- 

 shaped. Seeds solitary in each cell, pendulous. Cotyledons incumbent, or in 

 no. 1 accumbent ! Flowers small, white or greenish. (Name from Xe-rridLov, a 

 little scale, alluding to the fruit.) — Ours are annuals or biennials, except the 

 last. 



* Leaves all ivith a taperinc/ base, the upper linear or lanceolate and entire, the 

 lower and often the middle ones incised or pinnatifid. 



•»- Stamens 2 ; pods orbicular or oval, slightly notched at top ; style minute or 

 none; fruiting pedicels slender, widely spreading ; plant green. 



L. virginicum L. (Wild Peppergrass.) Cotyledons accumbent and 



seed minutely margined ; pod marginless or 

 obscurely margined at the top ; petals present, 

 except in some of the later 

 flowers. — A common weed 

 of roadsides and w^aste 

 places. June-Sept. Fig. 

 742. 



2. L. apetalum Willd. 

 Nearly scentless ; leaves 

 toothed or pinnatifid ; coty- 

 ledons incumbent as in the 

 following ; pod orbicular, 

 •minutely icing-margined at 

 the top ; petals usually want- 

 ing. {L. intermediiim M2in. 743. L. apetalum. 

 ed. 6.) — Dry places, espe- Leaf and tip of raceme 

 cially roadsides, by rail- x Va- 

 roads, etc., perhaps native Pofi x 2%. 

 in the West, recently introd. Cross-section of seed 

 eastw. (Eurasia.) Fig. ^^• 

 743. 

 3. L. ruderXle L. Very fetid; lower leaves 

 bipinnatifid ; the smaller and oval pods and seeds 

 marginless ; petals none. — Roadsides and waste 

 places, chiefly near Atlantic ports. (Nat. from Eu.) 

 Fig. 744. 



c. a. 



742. L. virginicum. 

 a. Leaves and tip of raceme x -/^ 

 h. Septum, pod, and petal x 2%. 

 C. Cross-section of seed x 4. 



+- ••- Stamens 6; pods ovate, winged; 

 style more evident in deeper notch; 

 pedicels thickish, compressed, as- 

 cending ; plant very glaitcous. 



4. L. SATIVUM L. (Gaki)en Cress.) 

 Glabrous annual (3 dm. high) ; lower 

 leaves bipinnatifid ; racemes long and 

 stiff ; petals present. — Common salad 



plant, tending to escape from cultivation. (Introd. from Eu.) 



Fig. 745. 



744. L. ruderale. 

 Leaf and tip of raceme x 2/3 

 Pod X 21/3. 

 Cro;5s-section of seed x -J. 



745. L. sativum 



Part of fruiting 



raceme x y,. 



