GENUS 2. 



ST. JOHN'S-WORT FAMILY 



17. Hypericum mutilum L. Dwarf, 



Small-flowered or Slender St. John's- 



wort. Fig. 2897. 



Hypericum mutilum L. Sp. PI. 787. 1753. 

 Ascyrum Crux-Andreae L. Sp. PI. 787. 1753. 



Usually annual, slender, erect or ascending, 

 generally tufted, abundantly branched, 6'-2i 

 high. Branchlets 4-angled ; leaves oblong or 

 ovate, sessile, clasping, obtuse, ^"-14" long, 

 2"-j" wide, 5-nerved at the base ; cymes many- 

 flowered, terminal, subulate-bracted; pedicels 

 slender, i"-6" long; flowers i"-2" broad, light 

 orange yellow; sepals foliaceous, linear, lan- 

 ceolate or oblanceolate, much shorter than or 

 slightly longer than the petals; stamens 5-12; 

 styles 3; capsule ovoid, pointed, i-elled, i"-2" 

 long, somewhat longer than the sepals. 



In low grounds, Nova Scotia to Manitoba, Kan- 

 sas, . Florida and Texas. Ascends 3000 ft. in 

 Virginia. July-Sept. 



18. Hypericum gymnanthum Engelm. 



& Gray. Clasping-leaved St. John's 



wort. Fig. 2898. 



Hypericum gymnanthum Engelm. & Gray, Bost. 

 Journ. Nat. Hist. 5: 212. 1847. 



Annual, erect, simple or sparingly branched, 

 io'-3 high. Leaves ovate, or the lower oval, 

 cordate-clasping, often distant, 4"-io" long, 

 2" -4" wide, acute, or the lower obtuse, 3-7- 

 nerved at the base ; cymes terminal, loose, sub- 

 ulate-bracted ; flowers numerous, i"-2" broad ; 

 sepals lanceolate, acuminate, equalling or 

 shorter than the petals and generally some- 

 what shorter than the i-celled ovoid capsule; 

 styles 3; stamens 10-12; capsule about 2" long. 



In low grounds, southwestern New Jersey and 

 Delaware to Ohio, Minnesota, Arkansas, Louisi- 

 ana and Texas. July-Sept. 



19. Hypericum majus (A. Gray) Britton. 



Larger Canadian St. John's-wort. 



Fig. 2899. 



Hypericum canadense var. majus A. Gray, Man. Ed. 



5, 86. 1867. 

 Hypericum majus Britton, Mem. Torr. Club 5 : 225. 



1894. 



Annual or perennial, stouter than H. canadense, 

 stem erect, i-3 high, usually branched above, 

 the branches nearly erect. Leaves lanceolate or 

 oblong-lanceolate, sessile or somewhat clasping, 

 io"-2|' long, 3-6" wide, acute or obtuse at the 

 apex, 5~7-nerved ; cymes several-many-flowered ; 

 bracts subulate ; flowers 3"-$" broad ; sepals lan- 

 ceolate, acuminate, about as long as the petals or 

 shorter ; styles 3 ; capsule narrowly conic, acute, 

 4"-5" long, longer than the narrowly lanceolate 

 sepals ; seeds minute, cross-lined and faintly 

 longitudinally striate. 



In moist soil, Quebec to Manitoba, British Colum- 

 bia, New Jersey, Illinois and Colorado. June-Sept. 



