STANDLEY TREES AND SHRUBS OF MEXICO 1333 



Calyx in anthesis 8 to 10 mm. long; capsule densely pruinose-puberulent. 



5. R. albiflora. 

 Leaves finely or coarsely pubescent beneath. 



Corolla lobes 5 mm. long or less 6. R. albicaulis. 



Corolla lobes 1 cm. long or larger. 



Calyx lobes 3 to 6 mm. wide, lanceolate or linear-lanceolate. 



Corolla throat not saccate below, the tube equaling or longer than the 



throat 7. R. speciosa. 



Corolla throat strongly saccate at base, the tube much shorter than the 

 throat. 

 Leaves broadly deltoid-ovate; corolla glabrous outside. 



8. R. bourgaei. 



Leaves lance-oblong; corolla pilose outside 9. R. palmeri. 



Calj'x lobes less than 2 mm. wide, linear. 



Flowers in large cymes; calyx about 5 cm. long 10. R. jaliscana. 



Flowers mostly solitary; calyx 2.5 cm. long or less. 

 Pubescence of the branches eglandular; corolla white. 



11. R. leucantha. 

 Pubescence of the branches of gland-tipped hairs; corolla purple or 

 purplish. 

 Pubescence of the leaves of stellate hairs. 



12. R. hirsuto-glandulosa. 

 Pubescence of the leaves of simple hairs 13. R. californica. 



1. Ruellia cupheoides Fernald, Proc. Amer. Acad. 36: 502. 1901. 



Type from limestone mountains above Iguala, Guerrero, altitude 1,200 meters. 

 . Slender shrub, 1 to 1.5 meters high, the branchlets short-pilose; leaves elliptic- 

 ovate, 3 to 5 cm. long, short-acuminate, entire, short-pilose or glabrate; peduncles 

 1 to 3-flowered, longer than the leaves; calyx 1.5 to 2 cm. long, the lobes linear- 

 lanceolate; corolla red, 3.5 cm. long. 



2. Ruellia sororia Standi., sp. nov. 



Type collected between Chilapa and Tixtla, Guerrero {Nelson 2160; U. S. 

 Nat. Herb. no. 908023). 



Shrub, the branchlets cinereous-puberulent and somewhat glandular-viscid; 

 leaves petiolate, elliptic-ovate, 3 to 4.5 cm. long, acute, obtuse or acute at base, 

 entire, whitish-pilose above, densely so beneath; flowers in dense few-fiowered 

 cymes, short-pedicellate; calyx 1.5 cm. long, the lobes linear, densely covered 

 with short gland-tipped hairs and with some longer white eglandular ones; 

 corolla 3.5 cm. long, glandular-pilose outside, the tube about 17 mm. long, 2 mm. 

 thick, the throat about 15 mm. long and 7 mm. thick, very oblique, the lobes 

 erect, 3 mm. long; anthers 3 mm. long, exceeding the corolla lobes. 



In form the corolla is like that of R. cupheoides. 



3. Ruellia peninsularis (Rose) I. M. Johnston, Proc. Calif. Acad. IV. 12: 



1172. 1924. 



Calophanes peninsularis Rose, Contr. U. S. Nat. Herb. 1: 75. 1890. 



Baja California and Sonora; type from La Paz, Baja California. 



Shrub, about 1 meter high, the leaves and young parts glutinous, glabrous 

 throughout; leaves broadly ovale to oblong-ovate, acute or acuminate, rounded 

 at base, entire; flowers solitary, short-pedicellate; calyx 5 to 6 mm. long, the 

 lobes linear-subulate; corolla purple, 3 to 5 cm. long, the throat about 1 cm, 

 broad. 



4. Ruellia alboviolacea Lindau, Bull. Herb. Boiss. II. 4: 318. 1904. 

 Type from La Victoria, Michoacdn or Guerrero, altitude 900 meters. 



