54 USEFUL PLANTS OF GUAM. 



shrub with a dense habit of growth, small sessile leaves, and axillary 

 flowers with 6-parted perianths. On the windward side of the island, 

 and near the southern end on the leeward side, growing in the sandy 

 beach at the very margin of the sea are groves of Costiari/ia equiseti- 

 folla (PI. XLI), trees with tufts of linear, leafless, jointed branches 

 resembling horsetails (Equisetum) and cone-Uke fruit. Among other 

 beach plants are the composites Stemmodontia biflora, S. canesceii^, 

 EcUpta aZba, the recently introduced Synech'dla nodiflora, and the 

 bidens-like Glossogyne tenuifolui; and m places there are mounds 

 formed by Sesuv'nnn portuJaca.?truin, the "sea purslane," often asso- 

 ciated with creeping grasses. Coconuts are abundant on the west 

 coast of the island (PI. I), but almost absent from the east coast. 



THE INNER BEACH. 



The principal trees forming the inner beach growth are Barring- 

 tonia speciosa, Baii'ingtonia rctcemosa, Tenrdncdia catappa, Sei^itiera 

 littoi-alis^ Pariti tiliaceum^ TTiespesia popndnea , Ochrosiamariannen^^ 

 Hernandia peltata^ Artocarpus communis, Ccdophylhim inopkyUum, 

 and Morinda citrifolia. Beneath their shade grow the white-flowered 

 amaryllis ( Crinum (tfiidticum), the grasses, Stenotaphi'um suJmlatmn and 

 Centotheca lappacea, and the shrubby Boerhaavia diffusa, Vite.v trifoUa, 

 and Meibomia umbellata. Climbing on the trunks of trees are a num- 

 ber of ferns, including Phymatodes phymatodes (PI. LXII), with leath- 

 ery lobed fronds, Cyclophorus adnascens, with small, linear-lanceolate, 

 simple fronds, Pavallia solida, with beautiful, glossy, divided fronds, 

 and Hiimafa Keterophylla, with fertile fronds differing from the sterile 

 in shape (PI. LIII). In addition to the above-mentioned species there 

 are a number of shrubs growing in the vicinity of the beach — ^the 

 beach plum (Xinwnia americana), Olerodendron inermis, with white, 

 honeysuckle-like flowers and exserted pink stamens; Acacia fame- 

 siana, with globular, jellow heads of fragrant flowers; Leucaena glauca, 

 with similar heads of white, inodorous flowers; and the custard apple, 

 Annona reticuiata, the only species of this genus which grows sponta- 

 neously on the island. Twining among these shrubs are several 

 species of Convolvulaceae, including Ipomoea choisiana and I. marian- 

 7ie)ifiis, with purple flowers; the lavender-flowered "alalag" {Argyreia 

 tiJiae folia), the flowers of which, called "abubo," are strung into giar- 

 lands by the children ; and C>pe7"CT///««jpeZl7/(7, which has white flowers. 



THE CLIFFS. 



On the promontory of Orote on the west coast, that of Kiroga on 

 the east near Talof6f6 Bay, on the rocky island of Cabi-as, or Apapa, 

 and on the edges of cliffs are usually found the following plants: Cor- 

 migmuis viariannensis, a shrub or small tree belonging to the Rubi- 

 aceae, with large, white, four-parted, trumpet-shaped flowers; Cycas 



