FUMITORY FAMILY 321 



petals tipped with purple or brown; spur horizontal; pod horizontal or reflexed, 

 about 1 cm. long and 6 mm. wide. High mountains: Utah. Subalp. 



3. FUMARIA (Tourn.) L. FUMITORY. 



Annual caulescent herbs. Leaves alternate, finely dissected. Flowers 

 perfect, irregular, in terminal or lateral racemes. Outer petals dissimilar, one 

 of them spurred at the base. Stamens in two bundles, opposite the outer petals. 

 Ovary subglobose, 1-ovuled; style filiform. Fruit a 1-seeded nut. Seed not 

 crested. 



1. F. officinalis L. Glabrous, diffusely branched annual, 2-10 dm. high; 

 leaves finely dissected into linear-oblong to spatulate divisions; corolla purplish, 

 together with the short spur 6-8 mm. long; pod spherical, 2-2.5 mm. in diameter, 

 minutely tuberculate. Waste places: N.S. Fla. Utah; adv. from Europe. 

 Plain. My-Au. 



FAMILY 52. BRASSICACEAE. MUSTARD FAMILY. 



Herbs or rarely shrubby plants, with alternate, entire to finely dissected 

 leaves. Flowers perfect, regular or nearly so, in spikes or racemes. Sepals 

 4, mostly erect. Petals 4, with spreading blades. Stamens usually 6, 

 tetradynamous, i. e., the inner 4 longer, or rarely 4 or 2. Gynoecium of 2 

 united carpels; ovary 2-celled or rarely 1-celled, superior or (in Subidaria 

 only) partly inferior. Fruit a capsule, rarely indehiscent. Seeds without 

 endosperm. [CRUCIFERAE.] 



I. Pod sessile, or short-stipitate (in no. 48-53); sepals erect, ascending, or connivent in 

 anthesis (except in 32, 33 and 53) panthers not twisted (except in no. 48 and 50- 

 53). 



A. Pod compressed or flattened contrary to the narrow partition. 



Pod not didymous; plants not densely stellate, except in Smelowskya. 



Pod orbicular, oval, oblong or cuneate, strongly flattened; plant not stellate. 

 Pod 1-celled, winged all around. 1. ISATIS. 



Pod 2-celled, not winged all around. 

 Cells of the pod 1-seeded. 



Pods ovate-cordate, acute at the apex, neither winged nor retuse. 



2. CARD ARIA. 

 Pods orbicular, elliptic or rarely ovate, retuse or notched at the 



apex, usually winged above. 3. LEPIDIUM. 



Cells of the pods 2-seeded. 



Pods more or less winged; cotyledons accumbent; hairs of the plant 



simple or none. 4. THLASPI. 



Pods wingless; cotyledons incumbent. 



Pods cuneate; plants with branched hairs. 5. BTTRSA. 

 Pods elliptic; plants glabrous or minutely stellate. 



6. HUTCHINSIA. 

 Pod ovate or lanceolate, not strongly flattened; plant stellate. 



7. SMELOWSKYA. 

 Pod more or less didymous; plants stellate. 



Seeds solitary in each cell; pods strongly flattened. 8. DITHYREA. 



Seeds several in each cell ; pods more or less inflated. 9. PHYSARIA. 



B. Pod neither compressed nor flattened contrary to the partition. 

 1 . Anthers not sagittate at the base, not twisted. 



a. Pod terete or tetragonal. 



t Pod short, scarcely more than twice as long as broad. 

 Cotyledons accumbent; valves of the pods nerveless. 



Pubescence stellate or canescent with branched hairs; seeds flat. 

 Petals white, 2-cleft. 35. BERTEROA. 



Petals yellow or tinged with red, not 2-cleft. 



10. LESQUERELLA. 

 Pubescence not stellate-; seeds terete. 



Petals white; stout perennials with a thick taproot. 



14. ARMORACIA. 

 Petals yellow or ochroleucous, rarely white; annuals, or perennials 



with rootstocks. 15. RADICULA. 



Cotyledons incumbent or folded transversely; valves of the pod 1- 



nerved; pubescence if any not densely stellate. 

 Submerged water plants, with subulate leaves; pods subglobose or 



elliptical. H. SUBULARIA. 



Land plants with ample leaves. 



Capsule obovoid, dehiscent, many-seeded. 



12. CAMELINA. 



