MACLOSKIE I RUBIACE^E. 739 



petalous corolla, and epipetalous stamens, equinumerous with its lobes; 

 and/h7a berry, or capsule, or drupe. 



Species more than 5,000, cosmopolitan ; most are tropical. 



KEY TO THE GENERA. 

 All have valvate corolla. 



A. Fruit segments few-seeded. Flowers small, 4-5-merous. Capsule dry, loculicidal, its lobes 

 bifid. Stipules broad, connate with the petioles. Alpine dwarf-plants. 



I. Cruckshanksia, p. 739. 

 A A. Fruit-segments i -seeded. Seeds ascending. 



b. Seed basal; ovary 2-celled, rarely more-celled. Septum thick. Fruit a juicy drupe. 



Stamens in base of corolla-tube, mostly dioecious herbs. 2. Nertera, p. 740. 



bb. Flowers usually 4-merous and stem 4-angled. Seeds on the septum. Flowers usually 

 4-merous, and stem 4-angled. Calyx-teeth small or none. Corolla rotate. Fruit 

 dry, didymous. Stipules leaf-like. 3. Galium, p. 740. 



i. CRUCKSHANKSIA Hook. & Arn. 



Alpine undershrubs or herbs, with small, leathery, spatulate, opposite 

 /eaves, and interpetiolar, triangular stipules adnate to their petioles. 

 Flowers yellow, in terminal, cymose umbels. Calyx 4-5-merous, 1-2 or 

 3 lobes enlarged in a single, colored, coriaceous lobe. Corolla salverform, 

 with a long tube, its lobes valvate. Stamens on the throat, only slightly 

 exserted. Ovary 2-celled ; each cell with 2-3 amphitropous ovules. 

 Stigma 2-cleft. Capsule thin. 



Species 5, Chili. 



i. C. GLACIALIS Poepp. & Endl. (Oreopohis citriittis Schl.) 



Densely cespitose undershrub, only 5 cm. high, glabrous, branches 

 leafy at top. Leaves opposite, petiolate, coriaceous, elliptic-ovate to 

 spatulate, i cm. long, including one third of this as petiole. Subconnate 

 stipules persisting after fall of leaf. Flowers subternate. Calyx hid 

 among upper leaves ; its tube obconical ; its limb unequally 4~5-lobed. 

 Corolla yellow, pubescent, with 5 short, linear-lanceolate lobes, its tube 

 10 mm. Stamens 5, anthers dorsifixed, with lateral slits near their top. 

 Capsule subglobose. 



(Chilian Andes, in cold regions); Patagon., Chubut; pampas of S. 

 Patagon., near Coy Inlet, by O. A. Peterson, Nov. 25, 1896. Whole 

 plant blackish when dry. W. Patagon., by Lago Nahuel-huapi (Dusen). 



