1054 RHINANTHACEAE 
Trees. 11. PAULOWNIA. 
Herbs. 
Anther-bearing filamens 4 or rarely 3. 
Sepals united into an angled tube. i 12. MIMULUS. 
Sepals distinct or nearly so. 
Anther-bearing filaments 4. 
Sepals equal or nearly so. 
Anther-sacs separated on stalks. 13. STEMODIA. 
Anther-sacs contiguous. 14. CONOBEA. 
Sepals very unequal, the upper one largest. 
Corolla nearly regular, about equally 5-lobed. 15. MONNIERA. 
Corolla irregular, manifestly 2-lipped. 
Flowers peduncled : hypogynous disk present: leaf- 
blades palmately nerved. 16. SEPTILIA. 
Flowers pedicelled : hypogynous disk wanting: leaf- 
blades pinnately nerved. . MECARDONIA. 
Anther-bearing filaments 3. 18. HYDRANTHELIUM. 
Anther-bearing filaments 2. 
Calyx of 5 nearly distinct sepals. 
Filaments short, stout or almost wanting. 
Anther-sacs transverse, separated on a dilated connective: R 
A 
~J 
succulent herbaceous herbs. 9. GRATIOLA. 
Anther-sacs vertical, contiguous : rigid herbs. 20. SOPHRONANTHE. 
Filaments elongated and slender. 21. ILYSANTHES. 
Calyx of 4-5 partially united sepals. 
Corolla exceedingly irregular, the upper lip wanting or ob- 
lete: anther-sacs divergent. 22. HEMIANTHUS. 
Corolla ied regular, the upper lip present: anther-sacs 
parallel. 
Calyx-lobes 4: corolla-tube barely surpassing the calyx, 
the lobes spreading. 23. MICRANTHEMUM. 
Calyx-lobes 5: corolla-tube much surpassing the calyx, 
: the lobes erect. 24. AMPHIANTHUR. 
B. Lower lip or lobes of the corolla external in the bud. 
Sepals distinct or nearly so. 
Corolla rotate or campanulate: stamens not surpassing the corolla. 
Corolla-lobes 5: leaves alternate: corolla campanulate. 25. CAPRARIA. 
Corolla-lobes 4: leaves opposite : corolla rotate. 
Capsules neither notched nor lobed, septicidal: stamens 4. 26. SCOPARIA. 
Capsules notched or lobed at the apex, loculicidal: stamens 2. 27. VERONICA. 
Corolla tubular: stamens exserted. 28. LEPTANDRA. 
Sepals almost wholly or only partially united into a tube. 
Corolla various, but only slightly 2-lipped : stamens not ascending under 
the upper lip. 
Corolla campanulate, funnelform or tubular: capsule not included in 
the calyx. 
Stamens equa! or nearly so. 
Stamens exserted : style elongated, filiform: stigmas minute. 
Corolla tubular: anther-sacs not distinct. 29. MACRANTHERA. 
Corolla rotate-campanulate: anther-sacs distinct. 30. AFZELIA. 
Stamens included: style short, columnar: stigma dilated and 
2-lobed. 31. BRACHYGYNE. 
Stamens manifestly didynamous. 
Anther-sacs awned at the base: corolla yellow. 32. DASYSTOMA. 
Anther-sacs awnless : corolla rose-purple, pink or white. 
Anthers of 2 sizes: upper leaves auricled at the base. 33. OTOPHYLLA. 
Anthers equal : leaves not auricled. 34. GERARDIA. 
é apa es : yes mostly m in me calyx. i 35. BUCHNERA. 
orolla strongly 2-li : stamens ascending under the upper lip. 
Anther-sacs unli c the Inner pendulous. : 36. CASTILLEJA. 
nther-sacs alike, parallel. 
Ovules 1-2 in each cavity : capsules 1-4-seeded. 37. MELAMPYRUM. 
Ovules several-many in each cavity : capsules many-seeded. RIS 
Calyx split, not accompanied by bractlets. 38. FEDOUN 
Calyx not split, accompanied by 2 bractlets. 39. SCHWALBEA. 
1. VERBASCUM L. 
Annual, biennial or rarely perennial caulescent herbs, often glandular or densely 
pubescent. Leaves alternate: blades entire, toothed or pinnatifid, sometimes cu 
on the stem. Flowers in terminal spikes, racemes or panicles. Sepals 5, partially united. 
Corolla white, yellow or purple, rotate: lobes 5, slightly unequal, the upper one exterior 
in the bud. Stamens 5, exserted, the upper 3, or all of the filaments pubescent : anther- 
sacs confluent. Ovary 2-celled, sessile: styles dilated or flattened at the apex. Nes 
numerous. Capsule oblong to subglobose, septicidally 2-valved: valves usually e , 
the apex. Seeds rugose, wingless. Our species bloom in the summer and fall. MULLEN. 
1. V. Blattaria. 
Foliage glabrous, or glandular above : racemes much interrupted. 
Foliage densely pubescent: racemes continuous, at least above. 2. V. Lychnitis. 
Leaf-blades crenate: racemes usually compound: capsules 4-6 mm. long. 3. V. Thapsus. 
Leaf-blades entire or merely undulate: racemes simple: capsules 7-10 mm. long. sre 
