219 



Cyanea hirtella (H. Mann) Rock 



Dclissca hirtella H. Mann Enuni. Haw. Plants in Proc. Am. Acad. VII :179, n. 258. 



1868. 

 Cyaiica loinmuiiis Rock Coll. Hawaii Publ. Bull. 2:41. 1913. 



(Plates 115, 116, 117.) 

 Plant single-stemmed, erect, not branching, fleshy, liut woody towards the 

 base, hirsute in the upper portion, 4-30 dm high, leaves pale green, ovate-oblong, 

 acnminate at both ends, chartaeeous, irregularly serrate to dentate with the ex- 

 ception of the base proper, glabrous or slightly liispidulous above, pubescent 

 underneath or only along the prominent veins and midrib, young leaves hirsute 

 on both faces. 10-20 cm long, 3-5 cm wide, on hirsute petioles of 2.5-6 cm; racemes 

 arranged all along the naked stem and in the axils of the leaves; peduncle 1.5-3 

 cm, hirsute, occasionally with foliaceous liracts, or naked, or with a few knobby 

 sears at the end, 3-7-flowered, pedicels slender, hirsute, 6-12 mm; calyx ovoid, 

 puberulous, the lobes one third its length or less, acute, triangular; corolla pale 

 purple to pink, slightly curved, tomentulose, 30 mm long, 4 mm wide, very thin, 

 the dorsal slit extending only one third its length, or even less, the lobes luiequal, 

 linear; staminal column glal)rous as are the bluish anthers; fruit ovoid to glo- 

 bose, dark orange colored 10-16 mm in diameter, crowned by the calycine lobes; 

 seeds smooth, shining, reddish brown. 



KAirAI : ^Mountains above Waimea, Mann and Brigham no. 574 in the her- 

 barium of the Bishop ^Museum, and Gray Herbarium ; — Waimea, August 30, 

 1895, A. A. Heller no. 2761) in Gray Herbarium, and herbarium of the Bishop 

 Museum ; — Lehua ilakanoe-Kaholuamano, September 1909, Rock no. 4885 in the 

 herbarium of the College of Hawaii ; — Waialae Valley, September 1909, Rock no. 

 5942, Kaholuamano, August 1909, Rock no. 5359, September 1909, Rock no. 5658, 

 October 1911, Rock no. 8865, October 1916, Rock nos. 12784 and 13103 in ths 

 herbarium of the College of Hawaii, and nos. 5359, 5658 in Gray Herbarium; — 

 Kaholuamano. fruiting October 20, 1916, A. S. Hitchcock nos. 15353 and 15371 

 in the U. S. National Ilt-rbarium;— Waialeale, October 22, 1916, A. S. Hitchcock 

 no. 15843 in the U. S. National Herbariiun. 



Horace Mann records this species as a branching shrub twenty feet in height ; 

 like Heller, the writer saw only plants about 10 feet in height. 



Cyanea hirtella is a very variable plant; as has already been remarked under 

 C. Kiiudscnii, the writer's C. communis is identical with Mann's Cyanea hirtella, 

 although the former includes specimens with calycine lobes much longer than 

 those in the typical C. hirtella. The latter occurs along streambeds together 

 with Cyanea Icptostegia and Cyanea spallndata, while those with longer calycine 

 lobes, shorter and pale leaves, and pale midribs occur at the high plateau and up 

 to Waialeale in the den.se swampy forests. The specimens from the latter lo- 

 cality may represent a variety of Cyanea hirtdla. It is the only Cyanea that 

 occurs on ilt. Waialeale proper. 



Cyanea rivularis Rock The Indig. Trees Hawaii. Isl. add. 511. 1913. 



(Plates lis, 119.) 

 A shrub 4-5 m high, stem simple or branching at the base, leaf whorls at 

 the end of the tomentose branches; leaves linear-oblong, bluntly acuminate at 

 both ends, crenate or serrate with callous teeth. 20-30 em long by 3-8 cm wide, 

 pubescent above, densely velvety tomentose underneath, and pale, on tomentose 

 petioles of 4-8 cm long, whole inflorescence tomentose including the blue corolla, 

 peduncle 4-8 cm hmg, naked two thirds of its length, many flowered, the pedicels 

 1-1.5 cm. bracts linear subulate; calyx dark purplish green, its teeth sharply 



